Unit 9: Grade 4 Lessons

In this learning activity, students find different ways to fill a Kindergarten water table basin with exactly 25 L of water using different-sized containers. The activity provides an opportunity for students to explore different strategies for adding and subtracting decimal numbers to tenths.

In this learning activity, students solve a problem in which they determine the number of chairs arranged in a 7× 24 array. The problem-solving experience provides an opportunity for students to explore a variety of multiplication strategies.

In this learning activity, students solve problems by dividing groups of students into teams of equal size. The focus in this activity is on solving different kinds of division problems (e.g., partitive, quotative) and on having students use meaningful strategies. Allowing students to develop and apply their own strategies helps them develop an understanding of division situations, and of flexible approaches for solving division problems.