What is another strategy you can use to find out if two shapes or figures are congruent?.What is one strategy you can use to find out if two shapes or figures are congruent?.How can you tell if two shapes or figures are similar?.
I will ask students, how can you tell if two shapes or figures are congruent?.Option #2: I will have a quick oral pop quiz.Option #1: Have at least 1-2 students from each table group share their answers from.Students will work on:, and do #’s 6-10 and #’s 12-15 independently. Those who don’t work on it now it will be left for them to do for homework. I will hand out the worksheets to students as their going back to their seats. **If you finish early, I have worksheet you can work on as well for practice in defining congruent and similar figures. Also, the rulers on your desks will help you as well to figure out what shapes are congruent or similar. I will pass out I coordinate grid to help you draw out the shapes easily and you can use it to help you with the first strategy. These problems will be found out in your text book. Now, boys and girls, when you go back to your seats I want you to work independently (for 30 minutes) on the problems I put up on the board. Remember there are two ways you can find out if two shapes are congruent or similar: (1) You can match the shapes by placing or drawing the shape on top of the other (demonstrate with cut out shapes) (2) use a ruler to measure one or two sides of each shape and if they measure out the same then the shapes are congruent. So, once again to review, Congruent Figures: have the same shape and size and Similar Figures: are figures that have the same shape but possibly different in size. “Great job mathematicians! I heard some great answers. I will listen in on the conversation for about 1-2 minutes to make sure that all partners are understanding the task. I would like you to turn and talk with partners and tell whether the two figures are congruent and similar, similar, or neither.” I will give them a minute to figure out the problems with their partners. I want you to look at these figures on the chart. (Direct students to pictures of figures on the chart) “Mathematicians, let’s take a look at our chart of the congruent and similar figures. If the sides measure up the same then the shapes are congruent and if not they are not congruent. Strategy two: use a ruler to measure one side of each shape. Strategy one: I will show this by displaying the cut out shapes of the same size and shape, and lay one shape on top of the other-to show students that the shapes fit exactly-this means they are congruent. I will teach students two strategies to help them find out if figures or shapes are congruent and/or similar.
Today I want to teach you about Congruent and Similar figures.Ĭongruent figures have the same shape and size.
CONGRUENT SHAPES WORKSHEETS FIRST GRADE HOW TO
We are going to use many of the figures and shapes you have learned about, but today we will learn how to identify congruent and similar figures, using these shapes. You learned about lines, rays, angles, polygons, and recently you learned about the different parts of the circle. Hey Mathematicians, I know over the past couple weeks you all have been starting to learn about geometry. What strategies can you see to find out if two figures/shapes are congruent or similar?Īsk students to write down the Teaching Point first. How do you know two figures are congruent? Students will apply and adapt a variety of appropriate strategies to solve problems:Ĥ.PS.11 Make pictures/diagrams of problemsĤ.PS.12 Use physical objects to model problemsĤ.PS.13 Work in collaboration with others to solve problemsĤ.CM.7 Restate mathematical solutions shared by other studentsĤ.CM.10 Describe objects, relationships, solutions, and rationale using appropriate vocabulary Math Text Books out on desks (before coming to the rug).Print outs of Coordinate grids for students (give out with independent practice).Worksheets for students who finish early.Two strategies for finding important information.Cut outs of Congruent and Similar Shapes.Objective (Teaching Point): Identify congruent and similar figures.
Subject: Math: Congruent & Similar Figures
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