8 Birds On A Tree Branch
Illustration of a tree branch with 7 birds and one flying away. It can be used to write mathematics story problems involving addition and subtraction. For example: 8 birds were on the tree. One flew away. How many feet were left?
Ada Van Stone Harris and Lillian McLean Waldo First Journeys In Numberland (New York: Scott, Foresman & Company, 1911) 48
Courtesy the private collection of Roy Winkelman