Mindset Mathematics: Visualizing and Investigating Big Ideas, Grade K

Great supplement for what our child is learning in school.

The media could not be loaded.  The book is well written and the concepts are well organized, even though they may seem a little simple for grade K students. It would seem that half of the techniques in this book e.g. color coding, shape talk, could be employed in a preschool classroom (that actually puts time in early mathematics education). Still a good book, and one can always buy the grade 1 version anyway if grade K is not enough anyway.The only problem is the binding is faulty. Not sure if it is just this one book or the whole batch is faulty?