Build a Boat
Materials:
Cuisenaire Rods 1 set per pair
1 centimeter grid paper
Overhead/Elmo to display Cuisenaire Rods
1 centimeter gride paper transparency if using overhead
Objective:
Children will create "boats" using Cuisenaire Rods. They will then make an estimate how many white rods are needed to cover the shape of their boat.
In this lesson children will:
- Discover numerical relationships among the rods
- Develop strategies for adding
Procedure:
Review: Ask how many white rods would be needed to exactly cover a yellow rod.
Model 5 white rods would be needed to cover the yellow rod.
Make a train of 2 yellow rods. Ask how many white rods would exactly cover this 2-car train.
Now explain today's activity/model
- Work with a partner, build a boat according to these rues:
- use at least 5 rods; but no more than 10
- make the boat lie flat
- use any colors except white
- estimate how many white rods would cover your boat
- check your estimate by figuring out the exact number of white rods that would be needed. Find 2 ways to do this
- Record how many of each color rod you used in your boat. Record the total number of white rods.
- Leave your boat in place. We will discuss as a group when everyone has finished.
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