Abacus- What number can you make?

Launch: Draw or have on the board a triangle, a square and a rectangle. What is the odd one out?{...}

Click on the link to view slideshow. https://docs.google.com/presentation/d/1bPl53dswiEWhP-oxUT5csI8VcMDTkzcoO4ZOCcCg7cw/edit?usp=sharing        {...}

Launch: Sponge and bucket of water activity. Get water from one bucket to another using only a sponge. Explore: Make{...}