buttons (and some corresponding keystrokes): H = place/size hundreds T = place/size tens O = place/size ones +/- = enlarge/shrink selected cube-digit S = select tool (drag to select/deselect) A = select all D = delete selected arrow keys = move selected cubes up, down, left, right #s = display total for each type of cube h>t = convert 1 hundred to 10 tens t>h = convert 10 tens to 1 hundred t>o = convert 1 ten to 10 ones o>t = convert 10 ones to 1 ten *number buttons divide screen horizontally/vertically *when the hundreds, tens, or ones button is not engaged, cubes are mouse click-and-hold draggable
Smartboard-friendly tool to help teachers creatively clarify CCSS NBT concepts.
