Two Chinese men use the abacus to calculate for their business. "The abacus was one of the earliest…

Illustration of a child holding blocks that can be used to write mathematics story problems involving…

Illustration of a child counting books by twos that can be used to write mathematics story problems…

Illustration of 20 chicks that can be counted by twos. It can be used to write mathematics story problems…

Illustration of children playing darts that can be used to write mathematics story problems involving…

Illustration of a child buying doll clothes. It can be used to write mathematics story problems involving…

Illustration of a child buying doll toys. It can be used to write mathematics story problems involving…

Illustration of woman selling food in dozens that can be used to write mathematics story problems involving…

Illustration of a 6 toy elephants and a toy man that can be used to write mathematics story problems…

Illustration of 6 children playing a game that can be used to write mathematics story problems involving…

Illustration of a child buying groceries. It can be used to write mathematics story problems involving…

Illustration of a jack-in-the box and 2 dolls. It can be used to write mathematics story problems involving…

Illustration of a child holding a kite that can be used to write mathematics story problems involving…

Illustration of Little Bo Peep and sheep. It can be used to write mathematics story problems involving…

Illustration of children holding number cards that can be used to write mathematics story problems involving…

Illustration of a child with 8 quarts and 1 peck. He is using the baskets to practice measuring. It…

Illustration of three rabbits and a carrot that can be used to write mathematics story problems involving…

Illustration of two rabbits and 8 carrots that can be used to write mathematics story problems involving…

Illustration of a child playing with toy soldiers. It can be used to write mathematics story problems…

Illustration of a child buying toys. It can be used to write mathematics story problems involving addition,…

Illustration of a child buying toys from another boy. It can be used to write mathematics story problems…

Illustration of toys that can be counted by twos. It can be used to write mathematics story problems…

Illustration of a group of toys. It can be used to write mathematics story problems involving addition,…

Illustration of a group of toys. It can be used to write mathematics story problems involving addition,…

Illustration of a child playing with train cars. It can be used to write mathematics story problems…

Illustration of 3 dolls in a train. It can be used to write mathematics story problems involving addition,…

Illustration of a tree branch with 7 birds and one flying away. It can be used to write mathematics…

Illustration of toy trees and building with a toy man that can be used to write mathematics story problems…

Illustration of the resultant vector when two vectors are acting upon a body at point P at 90 degrees.

Illustration of the resultant vector when two vectors are acting upon a body at point P.

Illustration of the resultant vector when two vectors are acting upon a body at point P at Ǝ degrees.

Illustration of the resultant vector when four vectors are acting upon a body at point P.