Select the "More" button to get a horizontal bar made of 1 to 9 squares. The bar will drop as far as it can towards the bottom of the screen. Select the bar to slide it from side to side. Try to make bars that combine to make 10 squares, so the bar disappears and you get 10 points. The game is over when the screen fills to the top with bars and a new bar can no longer fit on the screen. Get a 100 point bonus if you are able to clear the screen so no bars are visible.

Add and subtract within 20: Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).