Someone said: “I believe the supermarket curriculum”, the fashion which says: “if you can’t use it in the supermarket, let’s not teach it,” is the biggest influence in the decline in mathematics skills and knowledge in the past ten years. And the tendency is to say: “if it’s too hard, let’s postpone teaching it.” React to these statements.
Creating a teaching practice guided by constructivist principles requires a qualitative transformation of virtually every aspect of mathematics teaching.