Victor Scott School

Learning Objectives In this session, Mathematicians will: O Learn about geometric symmetry O Explore rotation and line or reflection symmetry O Analyze symmetry of various real-life objects

ENGAGE – What is symmetry? O On your geoboards, create a shape with exactly two lines of symmetry O Modification- On geoboard, create a shape with at least one line of symmetry. THINK/PAIR/SHARE: Explain to a partner where the line of symmetry is and how you know that this is a line of symmetry. Are there any other lines of symmetry in the pattern that you have just created?

Math Task In your Math Journal, draw your shape on the math grid *Remember that it must meet all of the criteria on your instruction sheet O Drawn neatly with a ruler (1pt) O Identification of parallel or perpendicular lines O If none required, state so (1 pt) O Lines of symmetry correctly drawn O If none required, state so (1 pt) O Summary of task (2 pts) Today, I learned that … You will receive an instruction card.instruction card Create a shape which meets the criteria listed on the card: You can use the Geoboard to work with your partner through the problem. Begin working in pairs. Each student must complete their own math journal

Reflect & Connect Pair/Pair/Share Turn to another pair and discuss your solution. Two pairs will be asked to share with the class.

ENGAGE – What is symmetry? Karen says that this shape has symmetry. Is she correct, why or why not? THINK/PAIR/SHARE: Debate your answer with a partner. Explain why or why not Karen is correct.

SYMMETRY Write the Dictionary Definition of each of the following terms Line Symmetry: ___________________________ _______________________________________ Rotational Symmetry: ______________________ _______________________________________ Rewrite the definitions for each in your own words Line Symmetry: ___________________________ _______________________________________ Rotational Symmetry: ______________________ _______________________________________ Line Symmetry Rotational Symmetry Does your object have any lines of symmetry? If yes, draw them and state how many lines of symmetry. ________________________________________ Does your object have rotational symmetry? Explain your answer. _________________________________________ Write the numbers of the pictures in the correct places of the Venn diagram Which objects in the pictures above have line symmetry, rotational symmetry or both?

Summarizing Symmetry Line SymmetryRotational Symmetry Another symmetry task