Ten-Frames are two-by-five rectangular frames into wich counters are placed to illustrate numbers less then or equal to ten, and are therefore useful devices for developing numbers sense within the context of ten. Various arrangements of counters on the ten-frame can be used to prompt different mental images of numbers and different mental strategies for manipulating these numbers, all in association with the numbers' relationship to ten. Plenty of activities with ten-frames will enable children to automatically think of numbers less then ten in terms of their relationship to ten and to build a sound knowledge of the basic addition/subtraction facts for ten which are an integral part of calculation. Suggested activities included.

14600 - set of 4 boards, one-color counters

14620 - set of 4 boards, two -color counters

14610 - one color counters, package of 20

14630 - two color counters, package of 20