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EXPERIENCE ONE
We conducted design thinking sessions with teachers and researchers to generate ideas for a manipulative to help students add and subtract signed numbers. Which option do you hypothesize will best help students understand negative numbers?
A focus on positive/negative numbers as opposites equidistant from zero
Illustration of a hopping kangaroo; the direction the kangaroo faces and hops represents operator and sign
Use of a real-world example (a thermometer) to ground positive and negative numbers
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