About This Lesson
<p>Using only the red and white rods, how many different ways are there to make up the other colors of rod?</p> Aligned to Common Core State Standard: 4.NF.1
Standards
Explain why a fraction ?/? is equivalent to a fraction (? × ?)/(? × ?) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions.
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Nice interactive resource to introduce addition of fractions.