On the playground, we have used sticks as all kinds of tools: hoses, wrenches, gas pumps, music makers, walking sticks, drawing implements, for picking things up, and more. When some of you rubbed pipes across the sand table, we thought of another tool: sandpaper. Sandpaper is a tool for making wood smooth. We put some on a wooden table and many of you liked rubbing it. Then this week we put out a new tool: screws and screwdrivers. You liked working with the screwdrivers, and wondered as you turned it, “Does this make the screw go in, or come out?” When you looked under the table you could see the screw sticking out.