![Awesum Alex, Math Detective: The Subtraction Problem Implementation Manual](http://zoidandcompany.com/cdn/shop/products/AASubMan_1024x1024.jpg?v=1607721059)
Awesum Alex, Math Detective: The Subtraction Problem Implementation Manual
This implementation manual uses a common sense approach to subtraction that is understandable for learners of all ages. A packet of Real Fake Money is provided to make the process of subtraction exciting and realistic, because subtraction is just shopping.