Texas Instruments TI15TK Teacher Guide - Page 13
Fraction Forms
UPC - 100000000137
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Fraction Forms Overview Students will compare the results of using division to create fractions under the different mode settings for fraction display and make generalizations from the patterns they observe. Grades 4 - 6 Math Concepts • division • multiplication • common factors • equivalent fractions Materials • TI-15 • pencil • student activity (page 9) Introduction 1. Present students with a problem such as: In a small cafe, there are 6 cups of sugar left in the pantry to put into 4 sugar bowls. If you want them all to contain the same amount of sugar, how much sugar goes into each sugar bowl? 2. Have students present their solutions to the problem. Encourage them to find as many ways to represent the solution as possible. Examples: • By thinking of using a ¼ cup scoop to fill the bowls, each bowl would receive 6 scoops, or 6/4 cups of sugar. • By thinking of separating each cup into half cups, there would be 12 half cups, and each bowl would receive 3 half cups, or 3/2 cups of sugar. • If a 1-cup measuring cup was used first, each bowl would receive 1 cup of sugar, then the last two cups could be divided into eight fourths to give 12/4 cups per bowl. • The last two cups could be divided into 4 halves to give 11/2 cups per bowl. 3. Have students identify the operation and record the equation that they could use with the calculator to represent the action in the situation (6 cups ÷ 4 bowls = number of cups per bowl). Refer to page 45 for detailed information about mode settings on the TI-15. Division can be represented by 6 P 4 or 6/4 (entered on the calculator as 6 4 ¥). In this activity, the fraction representation is used. © 2000 TEXAS INSTRUMENTS INCORPORATED TI-15: A Guide for Teachers 6