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Iona Greenfield Carnegie Elementary School
1414 E. 61st Street
Chicago IL 60637
This lesson is designed for Kindergarten and First Grade.
Solve problems by guessing and checking.
Identify length by using informal units to estimate.
Guess the number of peas in a pod and write an addition and subtraction
sentence for the number of peas in the pod.
Construction paper Ribbon Peas
Scissors Bubble gum Scrap paper
Pencils Blocks Gummy bears
Students will draw around foot on construction paper to make foot prints.
Then they will cut them out. Students will measure using informal units.
Students will cut a piece of ribbon to their approximate head size. They
will check by using tape measure to compare actual size and approximate
Guess the number of bubble gums in a jar. Check by counting.
The students will guess the number of peas in a pod and write an addition
and subtraction sentence for the number of peas in a pod. Check by using
counters (cubes or gummy bears).
These activities can be implemented to solve problems by guessing and
checking using non-standard units and standard units of measurement. This
approach gives students hands on experience to solve problems.