In his "jambas", Kiddo has been putzing around with his Montessori materials.
Building tens.Building hundreds.Building more numbers. Building the binomial cube.And of course, using the materials "inappropriately"... depending on your view. I thought it was great. You can also see we don't use a mat. For one thing, that means my floor needs to be vacuumed more often, and for another, New Kid would disturb the fun.
I'm linking this to Resources of the Week.