Shapes in My World

Overview

This is lesson 6 of 30 in Building Mathematical Thinking. Students identify and describe common two-dimensional shapes in familiar objects, building from prior work with shape names and visual matching. The lesson emphasizes that shapes remain the same when their size or orientation changes.

Learning intentions

Students will be able to:

• Name circles, triangles, squares, and rectangles.
• Describe at least one attribute of a two-dimensional shape.
• Match shape names, outlines, and real-world objects.
• Use words, gestures, pointing, or an adapted communication system to share mathematical thinking.

Success criteria

• I can identify a circle, triangle, square, and rectangle.
• I can describe one attribute of a shape, such as its sides, corners, or curved edge.
• I can name a shape even when it is turned or a different size.
• I can show my thinking by speaking, pointing, matching, or drawing.

Curriculum links

• Describing objects using shape names and relative position words.
• Correctly naming shapes regardless of orientation or overall size.
• Distinguishing flat, two-dimensional shapes from solid objects.
• Building and describing shapes using defining attributes.

Lesson structure (30 minutes)

1. 0–4 min · Shape hunt hook. Teacher displays the opening shape hunt image and asks, “What shapes can you find in this picture?” Students silently scan, then point to or name a shape they notice. Accept verbal responses, gestures, eye gaze, or communication devices.

2. 4–10 min · Explicit teaching. Teacher uses the shape teaching slides to introduce a circle, triangle, square, and rectangle, tracing each outline while saying its name and one attribute. Explain that a shape’s color, size, and direction can change, but its defining features remain; students repeat, sign, point to, or select each shape. Briefly contrast flat shape cards with a solid classroom object.

3. 10–18 min · Supported sorting. Teacher places real objects and clear shape outlines at four labeled stations or mats; pairs of students sort objects using the shape matching and describing page as a recording option. Students match each object or outline to a circle, triangle, square, or rectangle and describe one attribute using words, sentence starters, pointing, or teacher scribing.

4. 18–24 min · Turn and check. Teacher shows one shape at a time in different orientations and sizes using the orientation and size check slides. Ask, “What shape is it? How do you know?” Students respond individually through speech, pointing to a matching card, drawing in the air, or selecting from two choices. Check that students do not rely only on color or position.

5. 24–28 min · Classroom connection. Teacher invites students to locate one classroom object with a two-dimensional shape visible on it and models positional language such as “The rectangular sign is above the shelf.” Students find, point to, or name a shape and share one attribute; advanced learners identify more than one attribute or use a position word.

6. 28–30 min · Exit check and review. Teacher displays the closing review slides and asks each student to identify one shown shape and give one attribute. Students complete the final item on the shape matching and describing page or respond orally, by pointing, or with a selected communication symbol.

Resources

• the Shapes in My World slide deck
• the shape matching and describing page
• Large, high-contrast shape cards
• Tactile shape outlines or raised-line cards
• Sorting mats labeled circle, triangle, square, and rectangle
• Safe classroom objects or photographs of objects
• Pencils, crayons, or adapted writing tools
• Optional communication symbols or choice boards

Assessment

• During sorting, record whether each student can match and name the four shapes, noting whether the response is spoken, pointed, signed, drawn, or selected.
• During the orientation check, ask students to explain or show how they know a shape; prompt with “Look at the sides” or “Look at the corners” rather than supplying the answer.
• Use the final response as an exit check: identify one shape and describe one attribute. Save the worksheet or teacher notes for the next lesson’s grouping.

Differentiation

• Support: Begin with two choices, use real objects before abstract outlines, provide hand-over-hand tracing when appropriate, and use sentence frames such as “This is a ___” and “It has ___.”
• Communication and access: Accept verbal, pointing, matching, signing, eye gaze, drawing, or AAC responses. Pair students strategically and allow extra processing time.
• Dyslexia-friendly options: Use uncluttered, high-contrast cards with one large shape and clearly printed labels; provide tactile outlines, oral vocabulary practice, repeated modeling, and minimal text on the worksheet and slides.
• Extension: Students find several classroom examples, sort them in more than one way, and describe multiple attributes, such as number of sides, number of corners, curved or straight edges, size, or orientation. Older or more independent students may draw a shape that meets a stated attribute.