(Translated from the Teachers' guide for the first workbook of first grade in Ahat, Shtayim Ve Shalosh (One, Two, and… Three)     Goals: To learn the meaning of the addition and subtraction operations. This is achieved by using Cuisenaire Rods. Learning Addition Learning Subtraction To recognize the characteristics of the addition and subtraction operations To recognize the additive structure as a relation among three numbers - two of which are the addends and the third is the sum. To recognize the connection between addition and subtraction: We can apply one addition and two subtraction statements to the same additive structure . To bring about memorization of the addition and subtraction number facts with numbers up to 10.

Rationale: The chapters dealing with the topics of addition and subtraction, derive from the same rationale underpinning the development of all our material.   Manifestation of the theoretical approach within the learning of addition and subtraction: The Knowledge Domain The Exemplification Domain   Addition 3+2 Placing rods side by side. Subtraction 5-2 Placing rods one below another. The relationship between addition and subtraction The three-rod configuration: the addends rods, the sum rod, and the numbers configuration.

More about Addition and Subtraction with Rods   Rods vs. Groups: The advantages of the rod model over the use of groups Everyday language Rods are also suitable for students who already know the addition and subtraction number facts