Solutions and Mixtures

Grade Level

5th Grade

Duration

45 Minutes

Class Size

25 Students

---

Learning Objectives

By the end of this lesson, students will be able to:

• Define and differentiate between mixtures and solutions.
• Identify examples of mixtures and solutions in everyday life.
• Describe the properties of solutions (solute, solvent) and mixtures.
• Demonstrate understanding through hands-on exploration of creating mixtures and solutions.

Common Core State Standards Alignment

While Common Core State Standards primarily focus on Math and English Language Arts, the Next Generation Science Standards (NGSS), which are widely adopted alongside Common Core, guide 5th grade science instruction and align well with these goals:

NGSS Standards

• 5-PS1-3: Make observations and measurements to identify materials based on their properties (e.g., mixtures vs. solutions).
• 5-PS1-4: Conduct an investigation to determine whether the mixing of two or more substances results in new substances or if the substances retain their own properties (i.e., mixtures vs. solutions).

ELA Standards to Support Science Learning

• CCSS.ELA-LITERACY.RI.5.3: Explain the relationships or interactions between two or more individuals, events, ideas, or concepts in a scientific text.
• CCSS.ELA-LITERACY.W.5.7: Conduct short research projects using several sources to build knowledge on a topic.

---

Materials Needed

• Clear cups (one per pair)
• Salt, sugar, sand, and water
• Spoons or stirrers
• Chart paper and markers
• Science journals or notebooks
• Labels to mark substances
• Handout with definitions and examples (prepared by teacher)

---

Lesson Procedures

1. Engage (5 minutes)

• Begin with a quick question: “Have you ever mixed things together, like sugar in water or sand in a bucket?” Write student responses on chart paper under two headings: Mixtures and Solutions (even if they don’t understand it yet).
• Briefly introduce the key question: "What makes a mixture different from a solution?"

2. Explore (15 minutes)

• Activity: Students work in pairs.
• Give each pair clear cups with water, salt, sugar, and sand.
• Instructions: Mix salt in water, sugar in water, and sand in water (one substance per cup). Stir and observe.
• Students record observations in their journals: Which substances dissolve? Which do not? What does the mixture look like? Can they see the different parts?

3. Explain (10 minutes)

• Review observations as a class. On chart paper, create a two-column T-chart labeled Mixtures and Solutions.
• Define:
  • Mixture: A combination of two or more substances where each keeps its own properties, and they can often be separated (e.g., sand in water).
  • Solution: A mixture where one substance dissolves into another, appearing as a single substance (salt or sugar dissolved in water).
• Introduce vocabulary: Solute (the substance that dissolves), Solvent (the substance doing the dissolving).
• Relate back to student observations and the chart.

4. Elaborate (10 minutes)

• Challenge students to think of other mixtures and solutions they encounter daily (e.g., salad, iced tea).
• On their own or with partners, students write or draw two new examples of each in their journals.
• Students share their examples aloud to the class to reinforce understanding through peer learning.

5. Evaluate (5 minutes)

• Quick formative assessment: Distribute a short worksheet with 4 items. For each, students circle if it is a mixture or solution and explain why in one sentence.
• Collect for review to check understanding.

---

Differentiation Strategies

• Provide sentence starters for ELL or struggling learners (e.g., “A solution is ____ because ____.”).
• Visual aids on chart paper support those who learn best with visuals.
• Allow advanced learners to research an additional example of an everyday solution or mixture at home using books or online resources (to be shared the next day).

---

Reflection and Extension for Teachers

• Consider building a longer unit on the properties of matter using this lesson as the foundation.
• Encourage students to experiment safely at home by finding solutions and mixtures (e.g., mixing different drinks or salad ingredients) and reporting back.
• Use student journals as formative assessment to guide future instructional decisions.

---

This highly interactive lesson aligns with NGSS and leverages Common Core ELA standards to deepen understanding through writing, speaking, and collaborative learning — all tailored for 5th graders’ cognitive and developmental needs.