We have been using tens frames and bundles of sticks to make teen numbers. We learned that teens are ten and some more.
"I made 15 with 10 and 5 more." --Emma O.
"I made 19 with a 10 and 9 more." --Lucas
What happens when you mix quality picture books, the roar of a construction site, and a splash of mixed media art? You get a high-energy, in...