Danni Math Education Toys Montessori Wood Seguin Teens and Tens Boards Color Beads Bar Toy for Children Early Childhood Preschool Training

I am a trained Montessori teacher and bought these to use with my daughter. The quality of the materials isn't bad but the size of the boards is smaller than the standard Montessori boards I used in my classroom. The boards are so small that you can't put the ten bars in the vertical position next to the numerals. This kinda defeats the purpose of being able to see the one ten bar and the other bar, in the same positions as the numerals when using the teens boards. With the tens boards, you will only be able to "create" one number at a time because there are only 10 ten bars in the package. I am thinking about ordering more ten bars so I can create any number I need. Part of the use of this material is to be able to see the growing number of ten bars as you count from 10-90 and that isn't possible with this material.