Title: Introduction to Basic Geometry for 1st Graders
**Grade Level**: 1st Grade
**Subject**: Mathematics
**Duration**: 45 Minutes
**Topic**: Basic Geometry
### Objectives:
- Students will be able to identify basic geometric shapes: circle, square, triangle, and rectangle.
- Students will learn to distinguish and compare different shapes.
- Students will be able to recognize and describe properties of these shapes.
### Materials:
- Flashcards with geometric shapes
- A set of shape cutouts (circle, square, triangle, rectangle)
- Whiteboard and markers
- Chart paper
- Crayons and colored pencils
- "Shapes Around Us" worksheet
- Glue sticks and safety scissors
### Standards:
- Common Core State Standards for Mathematics: CCSS.MATH.CONTENT.1.G.A.1 - Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes.
### Lesson Procedures:
#### Introduction (10 Minutes):
1. **Greeting and Warm-Up**:
- Welcome the students and have a quick warm-up activity relating to shapes. For example, playing a short game of "I Spy" with shapes in the classroom.
2. **Introduction to Shapes**:
- Display the flashcards for the four basic shapes: circle, square, triangle, and rectangle.
- Briefly discuss and describe each shape, mentioning the number of sides and corners. For example:
- A circle is round and has no corners.
- A square has four equal sides and four corners.
- A triangle has three sides and three corners.
- A rectangle has four sides, with opposite sides being equal length, and four corners.
#### Guided Practice (15 Minutes):
3. **Shape Hunt**:
- Give each student a set of geometric shape cutouts.
- Ask the students to find objects in the classroom that match the shapes they have.
- Allow students to walk around and compare their shapes with real objects.
- Reconvene and discuss their findings, reinforcing the properties of each shape.
4. **Shape Comparison**:
- On the whiteboard, draw a big version of each shape.
- Have students come to the board one by one to draw or place their cutouts of similar shapes.
- Discuss similarities and differences as a group.
#### Independent Practice (10 Minutes):
5. **"Shapes Around Us" Worksheet**:
- Distribute the "Shapes Around Us" worksheet.
- Instruct students to color and identify objects in the worksheet based on the shapes they learned.
- Circulate around the room to assist and ensure that students are correctly identifying and coloring the shapes.
#### Art Activity (5 Minutes):
6. **Shape Collage**:
- Provide chart papers, glue sticks, crayons, and colored pencils to students.
- Encourage them to create a collage using shape cutouts and to label each shape.
- This activity will help them consolidate their learning and get creative.
#### Conclusion and Review (5 Minutes):
7. **Recap**:
- Gather students back together and briefly recap the lesson.
- Ask questions like, "Who can show me a triangle?" or "What is a defining feature of a square?"
- Praise students for their participation and correct responses.
8. **Homework**:
- Assign a simple homework task to draw or find more examples of the basic shapes at home.
### Assessment:
- Observation during guided and independent practice.
- Review and assess the "Shapes Around Us" worksheet.
- Note student participation in the shape hunt and collage activities.
### Differentiation:
- **For advanced students**: Introduce more complex shapes such as hexagons and pentagons.
- **For students needing extra help**: Provide additional one-on-one assistance and use tactile resources like shape blocks.
### Closing:
- Thank the students for their participation and enthusiasm.
- Remind them to observe and find shapes in their everyday surroundings.
- End the lesson with a positive note encouraging further exploration of shapes.