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Student Instructions
Tap 
Use the 
tool to move some spiders ON to the web. You choose how many.
Press the 
to record your work.
Use the tool to move some spiders OFF the web. You choose how many.
Use the 
tool to write a number sentence to show how many spiders you put ON the web, how many spiders you took OFF the web, and how many spiders are LEFT.
Tap 
when you are finished.
