How Shape Helps Function Practice Test

At show-and-tell, Emma brings a step stool to talk about reaching things. She could not reach the top shelf in her closet. The stool has a wide bottom and a flat top. Emma taps the wide bottom and says, "This wide base makes it not wobbly." She taps the flat top and says, "The flat top is a place to stand." She says, "That helps so I can reach the high shelf safely." She shows how her feet fit on the top. Her classmate says, "Now I get why it doesn’t tip." Why does Emma say the wide base is important?

At the art center, Maya’s markers keep rolling off the table. She shows a marker holder with many round holes on top. The holes are the same size as the marker caps. Maya points and says, "The round holes hold the markers in place." She adds, "They fit snug, so the markers don’t roll away." Maya says, "That helps so we don’t lose markers on the floor." She puts a marker in and gently bumps the holder. Her friend says, "Oh, they stay standing up!" What does Maya’s explanation show about the round holes?