Hot Chocolate Science Experiment | Lesson Plan & Worksheets | Years 3–5

Why does hot chocolate go cold… and what keeps it warm longer?

Turn this everyday question into an exciting, hands-on science investigation your students will LOVE. Children are given 2 cups with hot liquid (hot chocolate works well!), and have the measure the temperature change over a 30 minute period. There are 3 variables to test!

What Students Do:
Make predictions
Test ceramic vs paper cups, milk v water, lid v no lid
Measure real temperature changes
Create line graphs
Write scientific conclusions

What You Get:
✔ Teacher Guide (no guesswork!)
✔ Student Workbook (print-and-go)
✔ Full Lesson Plan (step-by-step teaching script)

Why This Resource Works:
Real-life, relatable science
Clear structure for ALL learners
Built-in differentiation
Strong literacy + maths links
Skills Covered:

Heat transfer & insulation
Fair testing
Graphing data
Scientific writing

**Time: **One lesson (or split across two)

Perfect For
Busy teachers
Observations
Engaging science lessons
Sub plans (yes — it’s that clear)

File Format: PDF (printable) — supplied as a compressed ZIP file containing print-ready PDFs. Not editable.

Note: This is a digital download only.