Review on Channies Problem Workbook Prek 1st Repetition: Enhance Learning and Retention by Stephen Johnson

This was exactly what we needed. Arithmetic exercises - a little every day. That's how you get better. It was enough for our daughter to train every day without overwork. The price was neither high nor low: it was very cheap. Along with the right work, this is definitely a good product for parents and their kids. Will definitely buy it again for my son.