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Lesson by Dr. Rebecca Pierce Subject: Mathematics (Fractions) Grade: Second Goal: Students develop an understanding of fractions. Generalization: Illustrate how fractions represent part of a whole Background: Fractions (halves/thirds) have been introduced and illustrated by the students with pictures. Tiered in content according to readiness Tier I: Using paper circles (pizza) & squares (sandwich), in pairs students determine how to share the food equally and illustrate by folding the paper. Have two pairs determine how they can share equally with four people. They can cut the parts and stack them to see if they match. Have the quad repeat the process for sharing a Reese’s Peanut Butter Cup equally with three people. Tier II: Using paper circles (pizza) & squares (sandwich), in triads have students determine how to share the food equally and illustrate by folding the paper. Have two triads determine how they can share equally with six people. Have the group of six repeat the process for sharing a Birthday Cake with twelve people. In each case, they can cut the parts & stack to match. Have the group start with half a cake and divide equally for 3, 6, & 12 people. Tier III: Using paper rectangles (sandwiches) & triangles (slices of pie), in pairs have students determine how to share the food in three different ways to get equal parts. Have them illustrate by folding the paper. Are there other different ways to divide each shape equally? How many ways are there? Have the pair determine which shapes - circles, squares, rectangles, triangles - are easier to divide evenly and illustrate why with a particular food of their choice. Assessment Note children's abilities to divide materials into equal parts and to recognize and check for equal parts. Can children explain how many equal parts there are and show how they know the parts are equal? If you have questions related to this website please contact: Dr.
Peggy Schimmoeller, Associate Professor of Education Updated June, 2006
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