The standard 3.NBT.A. 2 asks students to understand a fraction as a number on the number line This includes: - Represent a fraction 1/b on a number line diagram by defining the interval from 0 to 1 as the whole and partitioning it into b equal parts. Understand that each part has size 1/b and that the end point of the part based at 0 locates the number 1/b on the number line.
- Represent a fraction a/b on a number line diagram by marking off a lengths 1/b from 0. Understand that the resulting interval has size a/b and that its endpoint locates the number a/b on the number line including values greater than 1.
- Understand a fraction 1/b as a special type of fraction that can be referred to as a unit fraction (e.g. 1/2, 1/4).
Students can practice this with a simple activity using different colored paper clips, a number line and a pencil. String colored paper clips together to simulate a number line, creating fractions on the number line based upon the colors of the paper clips. For example 4 paper clips can be clipped together, the first paper clip can be red and the subsequent paper clips can be silver. Students note 1/4 on the number line. Continue with additional fractions and lengthen the paperclip number line. Tips and tricks: If students need extra support, they can use a number line that has already notated fraction intervals, like the example below: Additionally, 3rd grade expectations are limited to fractions with denominators: 2,3,4,6,8. You can focus on these denominators, or use the opportunity to use denominators beyond that range for extension. For more math activities visit our store at: https://www.teacherspayteachers.com/Store/Help-In-Hand
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