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Lesson Plan

Deciphering Decimals

In this tactile lesson, students will understand how decimals relate to a whole number by using base 10 blocks in a whole new way!
Grade:
Fifth Grade
Subjects:
Math
Decimals
Decimal Place Value
View aligned standards
5.NBT.A.1

Learning Objectives

Students will be able to represent a given decimal with base 10 blocks. Students will also be able to correctly pronounce names of decimals and fractions.

Introduction

(5 minutes)
  • Show students the flat, rod, and cube from the base 10 block set. Ask students what they think the flat, rod, and cube stand for. Answer: 100, 10, 1.
  • Now tell students that for this lesson, the flat equals 1 and stands for the ones place. Ask students to consider what this means the rod and cube would equal. Give students time to discuss this with a partner.
  • Have students share their answers. Explain that the rod is equal to one-tenth (1/10) and show how 10 rods fit into a whole. Explain that the cube is equal to one-hundredth (1/100) and show how 100 of them fit into one whole.
  • Write a "key" on the board to remind students of the new value of each base 10 block.