9th Grade Applied Math Activities (by date, latest first)

Welcome to Mathologist's Dollar Store, where every teacher resource is just one dollar, helping you create a vibrant classroom without stretching your budget!

This short, printable lesson is designed to help students independently learn how to write expressions and equations. It features guided notes to support understanding and series of practice questions to reinforce skills.

This is also ideal for self-paced learning but also a great way for classroom use or homework assignments.

Level 1: Appropriate for introducing inequalities.

Inequalities Task cards are included. There are 20 printable task cards and one-page answer sheet.

All the answers to the task cards are included.

Ideal for early practice or introduction to inequalities in middle school math, this resource encourages students to solve and graph inequalities with ease and holiday cheer.

More levels on inequalities available:

Solving Inequalities with Addition and Subtraction, Guided Notes and Practice

Solving Inequalities with Multiplication and Division Guided Notes and Practice

Solving Multi-Step Inequalities Guided Notes and Practice

Solving Compound Inequalities (AND and OR) Guided Notes and Practice Activity

More resources @mathologist

No better exercise for children to do to cement all the Math they have learnt thus far.

So make sure you take advantage of this incredible resource, as it could keep them busy for quite a while!

These tasks, (with complete keys) help teachers and their students see in a powerful way where and how the math they do gets applied in real life. A sample of the 35 products include:

• Division, prime numbers and Encryption
• Trig and building a lean-to roof.
• Geometric Sequences and Financial investments
• Slope and building the right stairs for old people.
• Statistics and making informed consumer choices.
• Line of best fit and predicting Track world records.
• Logs, Ln, e and Financial investments
• Linear Equations and Optimization (Linear Programming)
• Exponents and Encryption
• Pythagoras and design and gardening

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create.

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

No better exercise for children to do to cement all the Math they have learnt thus far! So, be sure to take advantage of this offer, as it could keep them busy for quite a while!

This Real-Life Math bundle contains 29 different tasks, (with complete keys), of where Middle School math gets applied in the real world. It will keep the children fascinated by how all they Math they learn is applicable to the Real World that we live in!

The work will keep your students very engaged since all of it has been tried, tested and refined in my daily classroom over many years. Demonstrate practically to students the answers to the following questions:

• Why do we have to learn this?
• Where is this ever used in real life?

This product can be used for

• groupwork

• discovery exercises

• assessment

• independent study

• a complete home-school Real-Life Math application curriculum for a middle school student.

• If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

• Please follow my store here to get notified of all new resources I create.

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

A very interesting piece of the Real-Life Math puzzle that is the ultimate activity!

Multiplication Tables, Factors, Products, Multiples, Divisibility, Telling Time, Integers, Distributive Property, Exponential Laws, Prime Numbers, Composite Numbers, Prime Factors, Place Value, Linear Equations, Divisors, Remainders, Integer Multiplication, Integer Division.

This bundle included EVERYTHING needed for RSA Encryption.

With this bundle, students will see that

1. They already know all the math needed for RSA Encryption (by about the end of 10th grade)

OR

2. The math needed for RSA Encryption is really very easy.

The skills listed above all form part of the RSA Cryptosystem. Students who are busy with these topics need to know (and be reminded by their teachers) that they are working with mathematics that has a very powerful, real-life application.

You might want to also look at the posters about the RSA Cryptosystem!

https://www.TeachShare.com/Product/Free-Class-Decor-RSA-Encryption-The-Middle-School-Math-that-builds-the-House-7109013

https://www.TeachShare.com/Product/Free-Back-to-school-Classroom-Decor-The-math-building-blocks-of-RSA-Encryption-6021103

https://www.TeachShare.com/Product/Free-Back-to-school-Classroom-Decor-This-Math-are-the-Gears-for-RSA-Encryption-6021086

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create 

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

A very interesting piece of the Real-Life Math puzzle that is the ultimate Back-to-school activity!

Exponents, Exponential Laws, Powers of 2, Expressing an integer as the sum of the powers of 2 - also called the binary expansion of the integer.

This product includes a FREE classroom poster, a FREE Google Form quiz (and a FREE PDF-version of the quiz) and a FREE key to the task.

The task, (with key), will involve...

The powers of 2

Expressing integers as the sum of powers of 2

Expressing integers in their binary expansion is a central part of the RSA Public Key Cryptosystem and mathematicians, programmers and students who encrypt data will use it all the time.

It is important that students know (and that teachers always remind them) when they are busy with these topics, that they are learning fundamental mathematics needed to encrypt data and secret messages.

You might also want to look at the Bundle for all the Math for the RSA Cryptosystem!

https://www.TeachShare.com/Product/A-fun-Back-to-school-activity-9-tasks-on-Mathematics-of-the-RSA-Cryptosystem-6021150

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Follow my store here for other great resources on Real-Life math.

I love to improve my resources, so please give me constructive feedback on each product.

You can find all the RSA Encryption worksheets here.

To measure the rain and use it in class for a Real-Life Math task is a wonderful activity! No better Real-Life Math application.

This printable resource includes a task with complete key. Students will calculate the amount of rain that fell in a 20-mile radius if it rains 1 inch. They will then determine what it would cost to bring that amount of water to Athens, GA, in shipping containers from the nearest lake. Students will calculate the volume of a cylinder and a rectangular prism, gas mileage, cost of transport, ratios and proportions and much more.

This resource works great as ...

• an assessment exercise
• a task
• independent work
• distance learning
• math stations
• math centers
• homework
• an end of unit practical project

You may also like these resources also on Volume!

https://www.TeachShare.com/Product/Perfect-Back-to-School-activity-Real-World-Surface-Area-and-Volume-Task-11608271

https://www.TeachShare.com/Product/Back-to-school-fun-Volume-of-Prisms-Did-I-get-cheated-with-Ice-Cream-7953475

https://www.TeachShare.com/Product/Back-to-school-fun-Real-Life-Volume-of-Spheres-Task-with-Complete-Key-8034048

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create.

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

A very interesting piece of the Real-Life Math puzzle that is the ultimate activity!

Multiples, Factors, Products, Divisibility of Integers, Prime Numbers, Remainders, Modular Arithmetic, Finding the GCD, Distributive Property - how can these skills of the first 7 lessons be enough to do powerful, unbreakable RSA Encryption.
If you have done lessons 1-7, believe it or not, you know have all the skills to encrypt data using the RSA Public Key Cryptosystem.

This product includes 3 FREE classroom posters that will show students how their mathematics fits into the bigger picture of RSA Encryption.

This task, (especially the key), takes students through the process of encryption. It is much easier than you think - all you need is a solid basic knowledge of the first 7 lessons covered in my TeachShare-store - Real-Life Mathematics.

It is important that students know (and that teachers always remind them) when they are busy with these topics, that they are learning fundamental mathematics needed to encrypt data and secret messages.

You might also want to look at the Bundle for all the Math for the RSA Cryptosystem!

https://www.TeachShare.com/Product/A-fun-Back-to-school-activity-9-tasks-on-Mathematics-of-the-RSA-Cryptosystem-6021150

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create 

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

Which gas should I buy? Should I always buy the cheapest kind? Students use their knowledge of ratios and unit rates to make good, financially sound real-life choices.

The price of the different kinds of gas and the gas mileage each one gives you on your car has an influence on your choice.

The mathematical topics covered in this task include:

• Ratios
• Unit Rates
• Problem Solving
• Logical Thinking

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

You may also not want to miss the following resources, now in Olympic Games time!

https://www.TeachShare.com/Product/Olympic-Games-Data-and-Statistics-Examining-the-Womens-800M-World-Record-7112256

https://www.TeachShare.com/Product/Olympic-Games-Data-and-Statistics-Examining-the-400M-Hurdles-World-Record-7108965

Please follow my store here to get notified of all new resources I create.

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

This printable resource includes a task with complete key. Students will use their knowledge of the volume of a prism to do an investigation into fair marketing and sales practices. Lots of containers of consumer products have a "false bottom". Do the retailers cheat us with this or do we get the amount we pay for? Other math topics needed to do this resource successfully include area of circles, ratios and percents.

Nothing compares with ice-cream, and that is why your child will remember this activity for a long time! Did they get cheated with the amount of ice-cream? No better Real-Life Math application than this.

This resource works great as ...

• an assessment exercise
• a task
• independent work
• distance learning
• as a problem for a math station
• with math centers
• for homework
• constructive group work centered on problem-solving.

You may also like these resources also on Volume!

https://www.TeachShare.com/Product/Perfect-Back-to-School-activity-Real-World-Surface-Area-and-Volume-Task-11608271

https://www.TeachShare.com/Product/Back-to-school-fun-Real-Life-Volume-of-Spheres-Task-with-Complete-Key-8034048

https://www.TeachShare.com/Product/Back-to-school-fun-How-much-did-it-rain-in-Athens-Volume-of-Prisms-Real-Life-7947987

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create.

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

A very interesting piece of the Real-Life Math puzzle that is the ultimate Back-to-school activity!

The sequence of powers of 2 is called successive squaring. The fact that every next power of 2 in the previous power of 2 squared is a very powerful tool to handle huge numbers easily.

This product includes a FREE classroom poster, a FREE Google Form quiz (and a FREE PDF-version of the quiz) and a FREE key to the task.

The task, (with key), will involve...

The powers of 2

Successive Squaring

Modular Arithmetic

Calculating the congruences of large powers with only a basic calculator (this is a very exciting skill for students)

Successive Squaring is a central part of the RSA Public Key Cryptosystem and mathematicians, programmers and students who encrypt data will use it all the time.

It is important that students know (and that teachers always remind them) when they are busy with these topics, that they are learning fundamental mathematics needed to encrypt data and secret messages.

You might also want to look at the Bundle for all the Math for the RSA Cryptosystem!

https://www.TeachShare.com/Product/A-fun-Back-to-school-activity-9-tasks-on-Mathematics-of-the-RSA-Cryptosystem-6021150

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create 

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

Perfect for an activity for children who wants to earn some pocket money at a part-time job!.

This printable resource includes a task with complete key. The focus is to make the straight line equation and its graph practical and applicable to a real life event - working for an hourly wage and getting paid a set amount per shift. Students get to graph equations with the table method, build the equation of a real-life example, solve simultaneous equations graphically and through the values in a table, and make some real-life choices about employment with their knowledge. Get them excited about the knowledge that they get to make their own decisions about who to work for, or what jobs they can choose to do!

This resource works great as ...

• an assessment exercise
• a task
• independent work
• distance learning
• math stations
• math centers
• homework

You may also like these resources on Finances!

https://www.TeachShare.com/Product/Back-to-school-fun-Geometric-Series-Compound-Interest-Financial-Maths-I-6776716

https://www.TeachShare.com/Product/Back-to-school-fun-Geometric-Series-Compound-Interest-and-Financial-Maths-II-6776727

https://www.TeachShare.com/Product/Back-to-school-Fun-activityCompound-Interest-Financial-Real-Life-Math-taskKey-6709989

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create.

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

A very interesting piece of the Real-Life Math puzzle that is the ultimate activity!

To decrypt encrypted data is a 5-step process. The 5 steps involve basic algebra skills students pick up since middle school.
This task, (especially the key,) meticulously takes students through the 5 steps. When students can decrypt data, they will become much more inventive to make even stronger encryptions and they will avoid common pitfalls.

This product includes 3 FREE classroom posters that will show students how their mathematics fits into the bigger picture of RSA Encryption.

You might also want to look at the Bundle of all the Math of the RSA Cryptosystem!

https://www.TeachShare.com/Product/A-fun-Back-to-school-activity-9-tasks-on-Mathematics-of-the-RSA-Cryptosystem-6021150

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create 

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

A very interesting piece of the Real-Life Math puzzle that is the ultimate Back-to-school activity!

This resource is a middle and high school task, with complete key on factors, multiples, products, remainders and divisibility. The math covered is fundamental to RSA encryption, the surprise is, it is actually very easy and can be mastered by any middle or high schooler.

This resource works great as ...

• an assessment exercise
• a task
• independent work
• distance learning
• math stations
• math centers
• homework
• constructive group work when introducing the topic.

You might also want to look at the Bundle for all the Math for the RSA Cryptosystem!

https://www.TeachShare.com/Product/A-fun-Back-to-school-activity-9-tasks-on-Mathematics-of-the-RSA-Cryptosystem-6021150

Please follow my store here to get notified of all new resources I create.

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

Multiplication (Times) Tables, Products, Factors, Multiples, Prime Numbers and Rules for Divisibility form an important part of the RSA Public Key Cryptosystem. It is important that students know (and that teachers always remind them) when they are busy with these topics, that they are learning fundamental mathematics needed to encrypt data and secret messages.

This task, (with key), focuses on ...

Multiplication Tables

Listing Products in a set

Listing all the Factors of an Integer in a set

Listing Multiples of an Integer in a set

The proper notation for Factors, Products and Multiples

The qualities of Prime and Composite Numbers

The Rules of Divisibility of Integers

Exciting News: This task is the first of 7 that will teach students ALL the mathematics they need to be able to do RSA Encryption. You can find them all here.

This is the perfect example of Real-Life Math and its application to the Real world.

This printable resource shows students the real-life trigonometry needed to do some basic carpentry - getting the angles right when building a ladder for a suspended bed. The contents include the trig ratios sine, cosine and tangent and the Theorem of Pythagoras.

This resource works great as ...

• an assessment exercise
• a task
• independent work
• distance learning
• math stations
• math centers
• homework
• constructive group work when introducing the topic.

You may also like the following resources on Trigonometry!

https://www.TeachShare.com/Product/Back-to-school-Fun-Real-Life-Trigonometry-Project-Building-a-Lean-To-onto-a-Shed-7000325

https://www.TeachShare.com/Product/Back-to-school-fun-exercise-Trigonometric-Ratios-and-Applying-it-to-Real-Life-6822459

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create.

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

This printable resource includes a task and complete key. Students use the formula for the volume of a sphere and their knowledge of ratios to compare the sizes of a water tower to the moon to the earth to the sun to the largest star in the known universe (UY Scuti).

This resource works great as ...

• an assessment exercise
• a task
• independent work
• distance learning
• math stations
• math centers
• homework
• constructive group work when introducing the topic.

You may also like these resources on Volume!

https://www.TeachShare.com/Product/Perfect-Back-to-School-activity-Real-World-Surface-Area-and-Volume-Task-11608271

https://www.TeachShare.com/Product/Back-to-school-fun-Volume-of-Prisms-Did-I-get-cheated-with-Ice-Cream-7953475

https://www.TeachShare.com/Product/Back-to-school-fun-How-much-did-it-rain-in-Athens-Volume-of-Prisms-Real-Life-7947987

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create.

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

A very interesting piece of the Real-Life Math puzzle that is the ultimate activity!

The Distributive Property and Multiplying Positive and Negative Integers and Variable Expressions are part and parcel of any Pre-Algebra course. These skills are very important when doing the Extended Euclidean Algorithm - if you make sign mistakes, you will be frustrated and you will have to do things over. The value of carefully writing out your mathematics is really illustrated with the Extended Euclidean Algorithm.

This product includes a FREE classroom poster, a FREE Google Form quiz (and a FREE PDF-version of the quiz) and a FREE key to the task.

The task, (with key), will involve...

Determining the GCD and expressing this GCD as a linear combination of the two integers.

Doing the distributive property over and over until you are very fluent with it.

Multiplying positive and negative integers faultlessly.

The extended Euclidean Algorithm is a central part of the RSA Public Key Cryptosystem and mathematicians, programmers and students who encrypt data will use it all the time.

It is important that students know (and that teachers always remind them) when they are busy with these topics, that they are learning fundamental mathematics needed to encrypt data and secret messages.

You might also want to look at the Bundle for all the Math for the RSA Cryptosystem!

https://www.TeachShare.com/Product/A-fun-Back-to-school-activity-9-tasks-on-Mathematics-of-the-RSA-Cryptosystem-6021150

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create 

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

A very interesting piece of the Real-Life Math puzzle that is the ultimate Back-to-school activity!

Divisors, Factors, Common Factors and determining the GCD (GCF) between 2 numbers are the bread and butter of any middle school math syllabus. The Euclidean Algorithm is an exciting way to determine the GCD and it paves the way to knowledge needed for the RSA Public Key Cryptosystem.

This product includes a FREE classroom poster, a FREE Google Form quiz (and a FREE PDF-version of the quiz) and a FREE key to the task.

The task, (with key), will involve...

Factors

Common Factors

Determining the GCD

It is important that students know (and that teachers always remind them) when they are busy with these topics, that they are learning fundamental mathematics needed to encrypt data and secret messages.

You might also want to look at the Bundle for all the Math for the RSA Cryptosystem!

https://www.TeachShare.com/Product/A-fun-Back-to-school-activity-9-tasks-on-Mathematics-of-the-RSA-Cryptosystem-6021150

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create 

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

A very interesting piece of the Real-Life Math puzzle that is the ultimate Back-to-school activity!

Multiplication Tables, Prime and Composite Integers, Coprime Pairs of Integers

The Euler Phi Function asks easy questions like: "Does 3 and 10 have a common factor larger than 1?" 3 and 10 are called coprime (or relatively prime).

This product includes a FREE classroom poster, a FREE Google Form quiz (and a FREE PDF-version of the quiz) and a FREE key to the task.

The task, (with key), will involve...

Prime Numbers

Determining if two integers are coprime

The Euler Phi-Function

Euler's Formula

The Euler Phi-Function forms an integral part of the RSA Cryptosystem.

It is important that students know (and that teachers always remind them) when they are busy with these topics, that they are learning fundamental mathematics needed to encrypt data and secret messages.

You might also want to look at the Bundle for all the Math for the RSA Cryptosystem!

https://www.TeachShare.com/Product/A-fun-Back-to-school-activity-9-tasks-on-Mathematics-of-the-RSA-Cryptosystem-6021150

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create 

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics

This printable resource includes a task with complete key. Students will have to apply their knowledge of the

1) surface area and

2) volume of prisms, together with basic knowledge of

3) the area of quadrilaterals

...to solve some real-life problems. They will be challenged to think creatively about design and budget issues around a swimming pool, all the time, using their mathematical skills to problem-solve.

This resource works great as ...

• an assessment exercise
• a task
• independent work
• for distance learning
• math stations
• math centers
• homework
• constructive group work when introducing the topic.

You may also like these resources on Volume!

https://www.TeachShare.com/Product/Perfect-Back-to-School-activity-Real-World-Surface-Area-and-Volume-Task-11608271

https://www.TeachShare.com/Product/Back-to-school-fun-Real-Life-Volume-of-Spheres-Task-with-Complete-Key-8034048

https://www.TeachShare.com/Product/Back-to-school-fun-Volume-of-Prisms-Did-I-get-cheated-with-Ice-Cream-7953475

If you enjoyed this resource, please leave a REVIEW at your leisure, for other possible buyers to know how you have experienced it. Thank you so much!

Please follow my store here to get notified of all new resources I create.

I love to improve my resources, so any constructive feedback from you will be extremely welcome. 

Enjoy this resource.

https://www.TeachShare.com/Store/Real-life-Mathematics