👩‍🏫 Teacher’s Guide

Objective
Students will explain how sediment forms rock layers and describe forces that shaped the Grand Canyon.

Vocabulary
sediment, deposit, channel, expand, sloping

Teaching Notes

• Start with a quick demo or model to visualize the concept.
• Pre-teach key vocabulary with gestures or sketches.
• Prompt students to predict, observe, and explain in full sentences.
• Check for understanding using either/or and short-answer prompts.

🧒 Student Worksheet

Concept and Helping Material

Definition. Over millions of years, sediments are deposited and pressed into rock; water, ice, wind, and gravity carved the Grand Canyon.
Helping ideas and samples:

• Try a quick sort, draw-and-label, or compare-and-contrast.
• Name one place you see this idea at home or at school.
• Safety: follow teacher directions and handle materials carefully.

Vocabulary and Definition

• — tiny pieces of rock and minerals
• — to lay down material carried by wind/water/ice
• — a cut or groove made by moving water
• — to grow larger
• — tilted or angled

Words to Learn

, , , ,

Sentences to Fill In

1. A river can cut a as it erodes land.
2. When water freezes in rock cracks, it and splits rock.
3. Long-term layers of become rock.
4. Rain runs downhill on land.
5. Sand laid down by water is said to be .

Hands-On Experiment or Activities

What You Need: simple classroom items.
What You Do: Weathered rock comparison: examine two stones—describe texture and shape; infer which is more weathered.
Think and Talk: What changed? What stayed the same?

Reflection

• Why might wind and water carve different shapes in rock?
• How does freezing water help widen canyon cracks?