👩‍🏫 Teacher’s Guide

Objective
Students will compare mixtures and solutions and explain how to separate them with simple methods.

Vocabulary
mixture, solution, solvent, solute, filter, evaporate

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. Mixtures keep parts visible or separable; solutions are uniform and can be separated by evaporation or other methods.
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

• — two or more substances together without changing identities
• — a mixture where one substance dissolves in another
• — the substance that does the dissolving
• — the substance that is dissolved
• — to separate solids from liquids using a barrier
• — to remove liquid as vapor

Words to Learn

, , , , ,

Sentences to Fill In

1. Salt water is a __ of salt and water.
2. In salt water, water is the __.
3. In salt water, salt is the __.
4. Sand and water make a __ you can filter.
5. You can get salt back from salt water if you __ the water.

Hands-On Experiment or Activities

What You Need: simple classroom items.
What You Do: Separate it: mix sand and salt with water; filter out sand, then evaporate water to recover salt.
Think and Talk: What changed? What stayed the same?

Reflection

• Which step proved salt water is a solution and not just a mixture?
• Why did filtration work for sand but not salt?