This product is intended to be used in a classroom modeled after Peter Liljedahl’s book Building Thinking Classrooms in Mathematics. This product is a day’s lesson or two days depending on your class's needs.

Launch Script: Slide 3. (Slides 4-5 are strategies if needed for struggling learners.) This is the mini lesson. It should be quick, 5-10 minutes.

Task cards: Slides 6-11 (answer sheet and key, slides 12-13) They can be laminated or paper copy to write on, table scoot, homework, game board cards, or team problem solving. They can also be used in a building thinking classroom. There are three types of questions which are marked in the bottom right corner with a snap cube. One snap cube is a type one (mild) question – subtracting whole numbers mixed regrouping, two snap cubes is a type two (medium) question – subtracting decimals with some whole numbers mixed regrouping, and three snap cubes is a type three (spicy) question – subtracting whole numbers and decimals with all regrouping. There are so many options to use them with. There is a free game board located in my store, Sprout & Thrive.

Consolidation: Slide 14. Wrap up the lesson after tasks. This is like a second mini lesson. Have students gather around and possibly walk the room to show varying strategies used by classmates.

Notes: Slides 15-16. This page is intended to be printed for students to write on and glue into journals or hole punched for a notebook.

Check Your Understanding: Slides 17-18. Students complete so the teacher can check to see what the student does or does not understand. It is meant to go in a certain order so that you, the teacher, know where a student begins to struggle – A, B, C, D, etc. – down each column of Mild, Medium, Spicy.

What's in this:

Subtraction Check Your Understanding

Subtracting Whole Numbers and Decimals Task Cards