standard_description: Explain why a fraction a/b is equivalent to a fraction (n × a)/(n × b) 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.
Grade 4 expectations in this domain are limited to fractions with denominators 2, 3, 4, 5, 6, 8, 10, 12, and 100.
problem_activity: Task
Each shape below has a line of symmetry. Draw a line of symmetry for each shape.
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Not every shape has an line of symmetry. Which of the four shapes below have a line of symmetry? Draw a line of symmetry on them.
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Some shapes have many lines of symmetry. Draw all the lines of symmetry you can on the shape below. How many are there?
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aligns: no