Purpose: Students learn to recognize ways to implement variables to announce quantities that vary, as a generalization for a pattern or as a formula. Students generate their own scenarios and keep proveions practice variables from practical situations. Students fore gain the use of variables to express many plebeian obtains of arithmetic and geometry in a general way. Students use variables to utter nearly any number and not just a particular number. As students write mathematical expressions, they liquidate a lead idea of identifying quantities that could be expressed as variables. They visit that variables can store many constant values and that a same variable-name can be used in distinct expressions. Also, more than one variable-name needs to be used to conform to two different quantities within an expression. They also see how a variable is different from a constant. Overview: I: Group act (10 minutes): Students work in classifys to creat e simple letter patterns from matchsticks. They see the pattern and use variables to write a general get to determine the number of matchsticks used in their repeating pattern. II. clear Discussion (10 minutes): After each group generates a regulate specific to their pattern, the teacher asks the groups to talk close to how they got an idea of engage letters to represent an unknown by letters. They talk about varying quantities, why these are c tout ensembleed variables and why can a variable take different values. III. utilize variables in veritable life problems (15 minutes): The class creates expressions from several known situations using variables. peerless student speaks of situation and the other students of his/her group get to write a mathematical expression of this on the board. Likewise all groups do this. As they do this, they throw that they can use a, b, x, y, n and many letters to express practical scenarios mathematically using variables. I V. Generating rules of geometry and arithmet! ic using variables (15...If you compliments to get a full essay, order it on our website: OrderCustomPaper.com
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