b'Mathematics Problem Slips: Addition Working Charts4 sets of colour-coded unit addition combinations (equations) slips. 1 set of combinations for each of the 4 Addition Working Charts. Each set supplied in separate plastic box.Item Number: 559524$44.95 Addition Equations And Sums BoxThis 2-compartment box with lid contains plastic chips, 1 set with equations printed on them and 1 set with the answers to be used with the Addition Working Charts. All the equations and sums for the addends 1-9 are included.Item Number: 014600$59.95 Addition Tables Addition Tables Addition Tables Booklet: 1 Booklet: 2 Booklet: 3The traditional addition tables forAddition tables 1-9 presented withA 9-page booklet with random the numbers 1-9 with second addendsecond addends in random order.addition equations. These booklets in numerical order, i.e. table of 1:These booklets encourage furtherencourage further practice and 1+1= thru 1+9= (40 booklets). practice and repetition (40 booklets). repetition (40 booklets).Item Number: 559521 Item Number: 559522 Item Number: 559523$36.95 $36.95 $36.95Nienhuis Montessori 69'