Symmetry Block Activity Sheet (teacher made) - Twinkl - Free Printable

It looks like you've uploaded an image of a symmetry worksheet designed to help students practice completing patterns using line symmetry (reflection symmetry). The task is to shade squares in the blank half of each grid so that the completed picture is symmetrical across the central vertical line.

Let’s go through how to solve this step by step and explain the concept.

---

🔍 Understanding the Task

Each grid has:
- A vertical dashed or solid line down the center — this is the line of symmetry.
- One side of the grid is already shaded with colored squares.
- You need to shade the corresponding squares on the other side so that the pattern is a mirror image across the line.

> This means:
> For every shaded square on one side, there should be a matching shaded square at the same distance from the line of symmetry, but on the opposite side.

---

✔ Step-by-Step Solution Strategy

1. Identify the line of symmetry (the vertical line in the middle).
2. For each shaded square on the left side, find its mirror image on the right side.
- Count how many squares it is from the line.
- Shade the same position on the opposite side.
3. Repeat for all shaded squares.
4. Make sure both sides are exact reflections.

---

🧩 Let's Solve Each Grid

#### Top Left (Red Squares)
- Shaded squares on the left:
- Row 1, Column 1
- Row 2, Column 1
- Row 3, Column 2
- Row 4, Column 1
- Mirror these to the right:
- Row 1, Column 5 → shade
- Row 2, Column 5 → shade
- Row 3, Column 4 → shade
- Row 4, Column 5 → shade

> So on the right side, shade columns 5, 5, 4, 5 respectively.

#### Top Right (Orange Squares)
- Left side:
- Row 1, Col 1
- Row 2, Col 2
- Row 3, Col 1
- Row 4, Col 2
- Mirror to right:
- Row 1, Col 5 → shade
- Row 2, Col 4 → shade
- Row 3, Col 5 → shade
- Row 4, Col 4 → shade

#### Middle Left (Yellow Squares)
- Left side:
- Row 1, Col 1
- Row 2, Col 1
- Row 3, Col 2
- Row 4, Col 1
- Mirror:
- Row 1, Col 5
- Row 2, Col 5
- Row 3, Col 4
- Row 4, Col 5

#### Middle Right (Green Squares)
- Left side:
- Row 1, Col 1
- Row 2, Col 2
- Row 3, Col 1
- Row 4, Col 2
- Mirror:
- Row 1, Col 5
- Row 2, Col 4
- Row 3, Col 5
- Row 4, Col 4

#### Bottom Left (Blue Squares)
- Left side:
- Row 1, Col 1
- Row 2, Col 1
- Row 3, Col 1
- Row 4, Col 2
- Mirror:
- Row 1, Col 5
- Row 2, Col 5
- Row 3, Col 5
- Row 4, Col 4

#### Bottom Right (Purple Squares)
- Left side:
- Row 1, Col 1
- Row 2, Col 2
- Row 3, Col 1
- Row 4, Col 2
- Mirror:
- Row 1, Col 5
- Row 2, Col 4
- Row 3, Col 5
- Row 4, Col 4

---

✔ Final Answer Summary

For each shape, reflect the shaded squares across the vertical line:
- Each shaded square on the left has a matching square on the right, equidistant from the line of symmetry.
- Use a grid-based counting method: if a square is 1 column left of the line, its mirror is 1 column right.

> 💡 Tip: Draw a small cross or mark where the line is to help visualize the reflection.

---

🎯 Educational Goal

This activity teaches:
- Reflection symmetry
- Spatial reasoning
- Pattern recognition
- Attention to detail

---

✔ How to Complete the Worksheet

To finish the worksheet:
1. Take a pencil or marker.
2. For each colored shape, look at the left side.
3. Copy the pattern to the right side, mirrored across the line.
4. Double-check: does the figure look like a mirror image?

---

Would you like me to generate a completed version of the worksheet as a visual guide? Or perhaps create a printable answer key? Let me know!