This learning resource focuses on applying mathematical formulas and the water displacement method to accurately calculate the volume of both regular and irregular objects. The objective is for students to use appropriate scientific units (cm³ and mL) to perform these calculations effectively. Students learn to calculate the volume of rectangular prisms using the formula V = L × W × H, followed by practicing the water displacement method for irregular objects, exemplified through an experiment involving a marble in water. Activities include calculating the volume of a wooden block, determining the volume of a marble using water displacement, and predicting the effects of submerging less dense objects in water.