Stingrays and zebra mbuna fish can perform simple addition and subtraction involving numbers between 1 and 5. Several studies have shown that fish can tell the difference between higher and lower ...

Add and subtract within 100 using compose, decompose, and place value strategies. Engage with a number talk to sum near-doubles using compensation. Add and subtract within 100 in more than one way.

Scarlett Howard received funding for this project from The Company of Biologists and the Australian Government. Adrian Dyer and Jair Garcia do not work for, consult, own shares in or receive funding ...