I love math, and know how important MATH is, no matter what. Many people are afraid of Math because of bad experience, or luck of good teacher. Well MATH is like any other language, you have to learn it and build up your knowledge step by step like you learn phonics, reading, writing. Mathematics is not more difficult than any other subject.
So I found this extraordinary website where you practically have a whole Math program free: free teaching manual. The idea is based on Hungarian teaching concept, Hungarians have one of the highest standards in Mathematics. The program is called Mathematics Enhancement Programme and it is used in British Schools. I love the whole approach to teaching Math, it is very important to tech playfully and enjoyably.
Primary stage or Reception year refers to Kindergarten year, and year 1 refers to Grade 1, etc...Mathematics Enhancement Program. They even have Spanish version of this Math Program. I hope you will enjoy it.