Libby Henderson
Student Instructions
Look at the robot jar. Estimate how many marbles you think are in the jar.
Teacher Notes (not visible to students)
Number of marbles 1) 20 2) 31 3) 100 4) 47 5) 68 6) 150
Martha Castellanos
15
Miss Keath
162
Ms. Nicky
237
Gemma Franklin
215
135
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