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In this bundle, students explore the science behind sourness and acidity through multiple low-cost, easy mini-labs in which students investigate pH, pH indicators, diffusion and behavior of particles in liquids, the relationship between temperature and diffusion, and how acidic ingredients can produce bubbles with baking soda.


This bundle includes TWO lessons:

1) Sourness & Color Changing Lemonade

2) Sourness & Color Changing Fizzy Drinks


These lessons both begin with the same 2-day lesson to introduce sourness and then go into different labs that explore slightly different topics. All together, this is 6-8 days of lessons.


The lemonade lesson also explores the behavior of particles in liquids, diffusion, and changes in color due to pH by making a lemonade.


This color changing fizzy drinks lesson also explores how

how acidic ingredients can produce bubbles with baking soda with both a lab and a recipe card activity.


Grades: 5-8


This Lesson Includes:

  • Teacher Lesson Plan with Essential Questions, Objectives, and NGSS standards, Lab Preparation (Materials, Ingredients, Amazon Lists when appropriate, and Tips & Tricks) and day-by-day lesson plans
  • Classroom Slides with directions for lesson flow, turn and talk prompts, illustrations and graphics, embedded videos, and whole group reflection questions
  • Student Handouts with step-by-step lab directions and other activities
  • Videos: an instructional lab video


All materials are included in the Google Drive folder

Science of Sourness Bundle (2 Lessons)

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