Then they write a sentence that describes how the total number of holes changes as new buttons are added. Students play Guess my Rule . The teacher gives them a starting number and the result after using the rule. She continues giving examples until students discover the rule. They study the patterns and discuss the rules observed.
Students consider the cost of two or three candies if one candy costs one dime.
They make a chart using the information. Students count the number of lifesavers in an assorted pack. They make a table showing the number of each color and the total number in one pack. They check their results with packs of lifesavers, which in general, have the same number of each color. Observe and explain how a change in one physical quantity can produce a corresponding change in another.