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Interactive video lesson plan for: Equality Step 3 Finding Common Denominators (Video #6)

Activity overview:

Common denominators are illustrated by replacing two Fraction Bars with different size parts by two bars having the same size parts. This visual model helps students to make sense out of the process of obtaining common denominators. The basic idea is that common size parts of bars is connected to common denominators for fractions. A list of pairs of fractions is used to look for patterns for discovering numerical methods for obtaining common denominators. The Small Step Race mat provides practice in converting halves, thirds, fourths, and sixths to the common denominator of twelfths. Details of visits to a second grade class describe the use of The Small Step Race and the gradual introduction of various type bars. The video ends with a demonstration of the free interactive web game "Fraction Bars Racing - One Bar" from fractionbars.com.

Visit FractionBars.com for more information.

Tagged under: Common denominator, size parts,fractions,patterns,numerical methods, grade,gradual introduction,visual models,meaningful,intuitive,sense-making,home ed.,teaching,learning,instructional video,fraction game,Fraction Bars,Albert B. Bennett,Jr.

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