Home 5th/6th Grade: Guess My Rule
5th/6th Grade: Guess My Rule

In this Number Talk, Fran Dickinson engages his 5th and 6th grade students in divining the function from the input and output numbers. As the learners guess input numbers, the educator generates the output number. After each guess he has one of the learners “graph the point."

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Fran Dickinson and his students had done two previous number talks involving “guess my rule?” The difference in this day’s number talk was the graphing of the coordinate values. In his planning, Dickinson and his colleagues decided to set parameters for the learner guesses to keep all of the points in the first quadrant. They had only recently begun investigating coordinate pairs and they thought it would simplify things to have the learners focus. During the number talk, students share different opinions of how to state the rule. Dickinson and his students model “silent signals” for showing agreement and disagreement with one another’s thinking.

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