Yeast & Bread: Evidence of Life & Cellular Respiration

This lesson was recently updated on

June 2025

This is a required assessment for the Science & Cooking for Educators Program.

Summary of Updates

Version 3 (V3) Updates (as of April 2025)
New Activities:
● New Lessons (Lesson 1.2 What is the gas being produced? and 1.3 Where is the carbon dioxide coming from?)- builds off of baking soda
● New Lesson: 1.5 What else is produced besides gas? [& comparing yeast to us] - included to meet Open Sci Ed standards and alignment by reviewing cellular respiration in humans

Modifications:
● Added in new activity to briefly introduce the idea of balanced chemical equations in Lesson 1.6

Version 3 (V3) Updates (as of April 2025)
New Activities:
● New Lessons (Lesson 1.2 What is the gas being produced? and 1.3 Where is the carbon dioxide coming from?)- builds off of baking soda. Includes demos and a glucose test to show that glucose is decreasing and carbon dioxide is increasing
● New Lesson: 1.5 What else is produced besides gas? [& comparing yeast to us] - included to meet Open Sci Ed standards and alignment by reviewing cellular respiration in humans. Students learn more about oxygen.

Modifications:
● Added in new activity to briefly introduce the idea of balanced chemical equations in Lesson 1.6

Simulations for this Lesson

All Simulations

Tea and Temperature

Modeling Smell

How is Tea Made?

Comparing Gases & Liquids

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