INSTRUCTION IN ARITHMETIC 4. Develop additional problems and practice material related to the children's daily living. This step is important and is anticipated by modern textbook writers. No published material, however skillfully prepared, can be expected to provide help in that vital phase of arithmetic instruction, the use of the child's local en- vironment in making arithmetic real. 5. Do not hurry children into glib response. Be confident you are doing the right thing in developing a broad base of number ex- perience upon which to build real mastery. 6. Expect to find individual differences within the class. Temporary grouping for additional instruction in certain phases is often helpful. 7. Remember that arithmetic also constitutes a reading problem and that from the child's point of view the difficulty may lie in understanding what the writer expects him to visualize rather than in computation. 8. Expect to do considerable reteaching within the year and from year to year, presenting as new material each year the steps that were new in the previous grade. The children often do not have sufficient use for all processes in their arithmetic outside the classroom to retain mastery through vacation periods.