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Heating Butter & Rice Krispie Treats: Phase Changes & Thermal Energy Transfer

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This lesson was recently updated on  

Late Oct 2025

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

Summary of Updates

SMALL UPDATES IN LATE OCTOBER 2025
● A number of small updates were made to provide additional scaffolding and supports for students, more small opportunities to apply concepts to new applications to both review and assess understanding, and additional notes in lesson plan on what to look for in models and discussions (see details)

UPDATES IN SEPTEMBER 2025
● NEW- Lab added to Lesson 1.1
● NEW- Lesson 1.2
● NEW- Lesson 1.3
● NEW- Lesson 1.4

SMALL UPDATES IN LATE OCTOBER 2025:
● Lesson 1.1- Scaffolds/Supports- Checklist of "what to look for" in student initial models and observations
● Lesson 1.3- Exit ticket (Why shouldn't you put hot soup in the fridge?)- to review and formative assess understanding with new application
● Lesson 1.4- New warm up to review and formatively assess understanding (melting ice cream); Added new instructional step-by-step video on how to use simulation (student-facing)
● Lesson 1.5 (Assessment)- Added more scaffolded/specific template for rice krispie treat model to better focus and assess student understanding of core concepts

LARGE UPDATES IN SEPTEMBER 2025:
● NEW- Cooling Butter Lab added to Lesson 1.1
● NEW- Lesson 1.2 -Act it Out Activity + Simulation Activity --> drives home particle models for each state of matter
● NEW- Lesson 1.3- New Demo (Aluminum Foil + Butter) + Simulation Activity --> introduction to thermal energy transfer
● NEW- Lesson 1.4- Investigation rooted in Simulation --> factors in thermal energy transfer

SMALL UPDATES IN SEPTEMBER 2025:
● Adjustment- More time/scaffolding for initial models in Lesson 1.1 and 1.2 + reviewing/building lab safety skills in Lesson 1.1
● NEW- Student Choice: Recipe Analysis [Partial HW Assignment] (in Lesson 1.5)
● Small Adjustments/Reordering of Activities to unpack bubbles and color change (Lesson 2.1- Optional)





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Simulations for this Lesson

Lewis Structures

Equilibrium

Exploring Gases

Magnesium and HCl

Comparing Gases & Liquids

Maple Syrup Video

Umami & MSG (Video)

Elements & Compounds

Exploring Cheeses

Mixing & Polarity

Chlorine & Electronegativity

Sodium in Nature

Salt Composition Analysis

Methane Cycle

Anthocyanins & Equilibrium

Energy and Fuels

Flavor Compounds in Vanilla

Tea and Temperature

Cathode Ray Experiment

Periodic Table Trends

Elements & Chemical Formulas

Exploring Bond Types

Exploring Steaming

Salts Dissolving in Water

Tea around the World

Electrolyte Drink Analysis

Landfill Data Investigation

Sodium in Water Video

Types of Fuel

Vanilla & Gas Chromatograms

Modeling Smell

How is Tea Made?

Molecules in Milk

Tea and Energy

Heating a Liquid

Ionization Energy

Salt around the World

Particles and pH

Greenhouse Gases

Ammonia & Stoichiometry

Acids in Water

Observe: Vanilla Products

Conduction in Solids Instructional Video

Water's Heating Curve

Trace Minerals in Salts

Exploring Syrups

Comparing Atoms and Ions

Ingredients in Electrolyte Drinks

Periodic Table (Charges, Valence Electrons)

Ions and Charges

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