Along, perfectly level, frictionless bowling alley, over 2000 meters long, is built by a group of students as a class project. the center of the alley just touches the earth near their school and the ends of the alley extend tangentially into outer space. a bowling ball released at either end starts rolling towards the center of the alley and will continue moving- indefinitely.- until it strikes the pins at the far end and stops.- for a while but slows to a stop before reaching the pins.

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.