Trace Energy through a Flashlight
Explain a simple energy pathway without claiming energy is created.
Open lesson 1Energy pathways and honest energy budgets
Trace energy and check that a simplified energy ledger accounts for inputs.
Before you begin
- Read pathway arrows; add and subtract whole numbers.
Choose by skill rather than age alone. Read with an adult when useful, revisit a lesson, or explore another grade.
Follow the lesson sequence
Account for the Flashlight’s Outputs
Check a simple energy budget without losing or creating energy.
Open lesson 2Compare Useful Outputs Fairly
Use equal inputs to compare outputs for one stated purpose.
Open lesson 3Find the Missing Energy Entry
Use a system boundary and storage change to complete a ledger.
Open lesson 4Review and transfer
After the lessons, try 4 new review cases and a practical task. Each answer has an explanation and a link back to the related lesson.
Open the unit reviewGuest answers are temporary. Keep your own paper or document; this unit does not certify completion or record a school grade.