2
DAY 4
Geometry
Math Vocabulary 2D shapes, flat, sides, corners, angles, triangle, quadrilateral, pentagon, hexagon, 3D shapes
• Identify 2D shapes with varying numbers of sides • Identify 3D shapes and their attributes
Small Group
Review the Story [The pages are not numbered. The title page is page 1.]
• Show the cover of The Greedy Triangle. Review the characteristics of a triangle. Ask: How many sides does a triangle have? Are the sides curved or straight? How many corners does a triangle have? • Reread the book, reviewing as you go. As the triangle changes to each new shape, have children point to the new shape on the page, name it, and say where that shape can be seen in the real world. • Together, look at pages 20–23. Ask: As the greedy triangle gains many, many sides, what shape does it begin to resemble? (a circle) What happens when it tries to move?
• Read to the end. Help children summarize the story events. Their ideas should include: A triangle gets tired of being a triangle and asks the shapeshifter for one more side and one more angle. The triangle becomes a new shape, but gets tired of being that shape. Finally, at the end of the story, the triangle just wants to be a triangle again. • Talk about what it means to be greedy. Why do you think the shapeshifter grants the greedy triangle its wish every time? Do you think The Greedy Triangle is a good title for this story? Then ask: What lesson do you think the triangle learned? Extend the Learning • Guess and Draw Choose a shape, but do not show it to the group. Describe its mathematical characteristics—number of sides and number of corners, etc. Ask the children to guess and draw the shape. Then have children share their drawings to see whether they guessed correctly. Use the following 2D shapes: triangle, square, rectangle, circle, pentagon, and hexagon. • Shape Detectives Challenge the children to become “shape detectives” and hunt for common 2D flat shapes and 3D solid shapes in the classroom/school environment. Begin with: Can you find a cylinder in the classroom? (a pencil holder, a glue stick, a marker) Invite the children to explain how they know that the object is a cylinder. Repeat for other shapes. “Identify Polygons” Math Page Before children work on the page, use the page to play a game of “I Spy.” For example, say: I spy a hexagon. Have children point to all the hexagons on the page. Then read the directions and the description of each shape. Have children complete the page independently and later share and compare answers.
54 Scholar Zone Summer: Math
Made with FlippingBook - Online catalogs