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AKS: 4MA.E.8 identify and draw geometric objects, classify polygons based on properties, and solve problems involving area and perimeter of rectangular figures.
Learning Targets: I can classify triangles based on lines of symmetry, the presence or absence of perpendicular line segments, or the presence or absence of angles of a specified size.
Activating Strategy
Activating Strategy
Today, we will spend a few minutes working independently on a Geometry task. This task will help me see ways to support you with classifying two-dimensional shapes, angles, and lines of symmetry. If you need more clarification on your answers, that is okay. We will do an activity to help you improve your understanding.
First, you will list the number of the shape in the correct category, according to whether the shape is a quadrilateral or has parallel or perpendicular lines.
Next, you will identify if there is a right triangle by circling it and provide reasoning for why you circled a given triangle.
You will then list the shape's number in the correct category, according to whether it has acute, obtuse, or right angles.
The last part of this task requires you to draw as many lines of symmetry as possible in the given figures and provide reasoning for why you drew those lines of symmetry.
Shape Attributes
Shape Attributes
Sort Activity
Sort Activity
Use the dropdowns for complete directions In each step of this activity.
STEP 1: Your group will now complete an activity using the Shape Cards and Word Card Set 1.
When you start this activity, you will shuffle the cards and divide them evenly between your group members.
During this activity, there will be three categories, one for each circle of the Venn diagram. These three categories are as follows:
1) Shapes containing at least one acute angle
2) Shapes containing at least one obtuse angle
3) Shapes containing at least one right angle.
Each time you place a card on the chart, explain your thinking clearly to your partners. If your partners disagree with your placement, you can challenge them to explain why. You all must understand why each card is placed where it is.
10 MINUTES: There is much work to do today, and you may not be finished. The important thing is to learn something new, so take your time.
STEP 2: After you have sorted all the cards, or when time is up, remove all of the cards from the Venn diagram. You will repeat this activity on the other chart paper, using the same Shape Cards and Word Card Set 2.
You will now be sorting the cards into three different categories. The three new categories are as follows:
1) Quadrilaterals
2) Shapes containing at least one set of parallel lines
3) Shapes containing at least one set of perpendicular lines.
Remember to follow the same rules and instructions for sorting the cards as before in the first activity. There is a lot of work to do, and you may not all finish. The important thing is to learn something new, so take your time.
10 MINUTES: There is much work to do today, and you may not be finished. The important thing is to learn something new, so take your time.
STEP 3: Lastly, you will clear the cards from the Venn diagram. You will no longer need the Venn Diagrams, just the Shape Cards.
Shuffle the cards and give each group member an equal amount of cards. You will then each take turns turning over Shape Cards. When one person turns their card over, they will tell the other group members whether or not the shape on the card is symmetrical.
If you say the shape on the card is symmetrical, you will also need to tell how many lines of symmetry are within that shape. You will then explain to the other group members why you think the shape is or is not symmetrical. Your partners will then tell you whether or not they agree with you and why.
If you all agree that the shape is symmetrical, put that card in a pile. If you all agree that the card is not symmetrical, place it in another pile.
Once you have taken turns using all of your cards, take the cards that were determined to have symmetrical shapes and use your pencils or crayons to draw all the lines of symmetry on the shapes.
Try to agree with a group about how many lines of symmetry are within each shape. If you are having trouble determining if a shape has lines of symmetry, you may use the tracing paper to help you.
10 MINUTES: There is much work to do today, and you may not be finished. The important thing is to learn something new, so take your time.
Independent Task
Independent Task
1. FRECKLE - Complete THREE Freckle Assignments each week. DUE FRIDAY. Your HIGHEST score in Targeted Practice is your weekly math grade - Click HERE for Freckle website
GRADED Targeted Practice - Current skill (5 questions; Score Goal=80% or higher)
Fact Practice - Multiplication Fact Practice
Adaptive Practice - At YOUR level
2. iREADY Math - Complete 30 minutes at your level each week
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