The Ladder Books
ספרי הסולם
Math and physics explained in the order that actually works: times tables, number facts, forces and motion, one rung at a time.
Each book reorders a topic so every step builds on the last. The times tables go 10, 2, 5, 4, 3, 9, 6, 8, 7. Number facts to 20 use six strategies instead of 400 things to memorise. Newton's laws start from the one thing everybody gets wrong.
Who it's for: kids who memorised the facts and then lost them, parents who want to help without relearning the textbook, and adults who never felt they really got it. Each book starts from the easiest foothold and adds one idea per step, so nothing has to be taken on faith.
Four books so far. Paperback on Amazon, in English.
Want to try the order first? Two free games use the same ladders: the Times Tables Ladder at sovereignhq.org/play/times-tables and the Number Facts Ladder addition game at sovereignhq.org/play/addition.