3rd Grade Chemistry Lesson

Discover the fascinating concept of density with an engaging, hands-on activity—creating a colorful rainbow in a jar! This fun experiment allows learners to explore how different liquids layer based on their densities, making science both exciting and visually captivating. The below description discusses all that is inside in this newly-designed complete lesson plan... 

Included Topics:

Introduction to Density

Learn how density determines whether substances float or sink, using everyday examples like oil and water. Students will understand the science behind layering liquids and how density creates separation.

Reading Passage: “What Is Density?”

A concise and engaging explanation introduces students to density concepts, including how heavier liquids sink and lighter ones rise. They’ll also learn how to create layers by carefully stacking liquids in a jar.

Hands-On Experiment: Create Your Own Rainbow in a Jar

Step-by-step instructions guide students to layer liquids such as honey, dish soap, water, oil and colored rubbing alcohol, creating a visually stunning rainbow while reinforcing density principles.

Interactive Worksheets and Observations

Students will track the experiment’s process using observation charts and answer thought-provoking questions about density. True/false and short-answer activities help solidify understanding of the concept.

Wrap-Up Discussion

Encourage students to share their results and reflect on their observations. They’ll connect their experiment to real-life examples, such as why certain objects float or sink.

Our Recommendation

This lesson plan blends science and art to make learning fun and interactive. A key highlight from the material is:

“By stacking liquids in a jar, students see how density works in action—turning a scientific concept into a colorful masterpiece.”

Students will develop their understanding of density, improve their observation skills, and enjoy a hands-on activity that sparks creativity.

Why This Resource Is a Must-Have

This engaging activity:

• Explains density in simple, relatable terms for young learners.

• Combines science and creativity to make learning fun.

• Includes a step-by-step guide, ensuring success for both students and teachers.

• Reinforces key scientific concepts with structured observation and reflection activities.

• Uses common household items, making it a low-prep, high-impact lesson.

• Encourages curiosity through hands-on experimentation.

Do purchase this, if the following is something you are looking for:

• A fun, interactive science experiment for grades 2-5+ (ages 8+).

• A hands-on activity that combines science and art, inspiring creativity.

• Ready-to-teach lessons with clear instructions and minimal prep.

• Worksheets and observation tools to support comprehension and reflection.

• Cross-curricular learning that blends STEM and critical thinking.

This resource delivers a memorable learning experience, making density an exciting topic for young scientists while providing teachers with a stress-free, engaging lesson plan.

Join us on a thrilling educational adventure with Real-World Reports – where knowledge meets excitement!

For permissions or inquiries, contact us through before purchase. Unauthorized use or reproduction is strictly prohibited.

Resource Information

• Pages: 12 Includes a Terms of Use (TOU) page, a “Get to Know Us” page, and all the engaging content you expect! Cover pages are NOT within this file!

• Ideal for Ages: students in grade 2-3+

• Teaching Duration: 1 complete class, depending on depth of exploration

• Download Now: This digital product is the full file at your fingertips!

Reminder: This resource is for single-classroom use only. Please refrain from sharing outside your class. Feel free to reach out with any questions before downloading. No refunds available on digital products.

NOTE: “We are not affiliated with or connected to any organizations or references mentioned in this document. This material is intended solely for educational purposes.”

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If you enjoyed this resource, we’d be thrilled if you left a kind review! Your support helps us continue creating more educational content that makes learning exciting and meaningful for students. Thank you!

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Discover how chemical reactions reveal whether a liquid is an acid or a base using red cabbage juice as a natural pH indicator. Here is a COMPLETE LESSON PLAN, with Worksheets and Answers for teachers to purchase...Included Topics are below:

Introduction to Acids, Bases, and pH

Learn about the pH scale, how it measures acidity and alkalinity, and how everyday substances like lemons and soap fit on this scale. Discover how red cabbage juice acts as a natural pH indicator by changing colors when mixed with acids or bases.

Reading Passage: “The Colorful World of Acids and Bases”

A short and engaging reading passage explains the pH scale and the role of red cabbage juice as an indicator. Students explore examples of acids, bases and neutrals, linking the science to real-world items.

Hands-On Experiment: Red Cabbage Lab

Step-by-step instructions guide students in creating pH indicator juice from red cabbage and testing various substances to observe the fascinating color changes caused by chemical reactions.

Worksheet and Observation Activities

Interactive tasks solidify learning, including filling out a pH color code chart, answering questions about observations, and completing true/false statements to reinforce understanding.

Wrap-Up Discussion

Reflect on the experiment by identifying acids and bases, discussing surprising results, and connecting the activity to everyday chemistry.

Our Recommendation

This lesson blends science and hands-on discovery to introduce young learners to the chemistry of acids and bases. 

Students will leave with a deeper understanding of chemical reactions and the confidence to explore science further.

Why This Resource Is a Must-Have

This engaging lab:

• Encourages curiosity and hands-on learning.

• Teaches core scientific concepts in a fun, approachable way.

• Reinforces understanding with structured observation and reflection.

• Offers ready-to-teach materials, saving preparation time for educators.

Do purchase this, if the following is something you are looking for:

• Interactive experiments to engage grades 2-5+ (ages 8+).

• Simple, low-prep science activities with detailed instructions.

• Cross-curricular learning that integrates reading, science, and observation skills.

• Resources for introducing chemistry basics like the pH scale in an easy-to-understand format.

• A ready-to-use lesson plan that includes worksheets, activities and discussion prompts.

This resource provides a complete, fun-filled experience that fosters a love for science in young learners while making teachers’ lives easier.

This resource is designed to inspire curiosity and nurture young scientists while helping teachers simplify their planning.

Join us on a thrilling educational adventure with Real-World Reports – where knowledge meets excitement!

For permissions or inquiries, contact us through before purchase. Unauthorized use or reproduction is strictly prohibited.

Resource Information

• Pages: 16 Includes a Terms of Use (TOU) page, a “Get to Know Us” page, and all the engaging content you expect! Cover pages are NOT within this file!

• Ideal for Ages: students in elementary schools (age 8+ year olds)

• Teaching Duration: 1 class, depending on depth of exploration

• Download Now: This digital product is the full file at your fingertips!

Reminder: This resource is for single-classroom use only. Please refrain from sharing outside your class. Feel free to reach out with any questions before downloading. No refunds available on digital products.

NOTE: “We are not affiliated with or connected to any organizations or references mentioned in this document. This material is intended solely for educational purposes.”

Your Feedback matters!

If you enjoyed this resource, we’d be thrilled if you left a kind review! Your support helps us continue creating more educational content that makes learning exciting and meaningful for students. Thank you!

Thanks for supporting the journey of learning and discovery with Real-World Reports!