Singapore Math - Primary Mathematics Mastery and Beyond 4A 23-12 Our reversible

Our reversible

With the height adjustment of  the top plate that adjusts according to the growth body

peg-40 castor oil

button fastenings to the side of the neck for easy changing and a hint of elastane in the cuffs

then simply turn it around to reveal a market style shop complete with shelves

Singapore Math - Primary Mathematics Mastery and Beyond 4A 23-12 Our reversibleMastery & Beyond is a distributed practice workbook. It provides practice of essential math concepts at select points to help students make connections. While the Additional Practice is for daily use, Mastery and Beyond is intended to be used at key points in a chapter after multiple lessons. Note: Two books (A and B) for each grade correspond to the two halves of the school year. Answer key in back of book. Soft cover.