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
168
Miss Keath
263
Ms. Nicky
186
296
Gemma Franklin
233
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