Calculate a model emission intensity
Calculate a model emission intensity using supplied evidence and a solved model.
About 25 minutes, plus any extended practice
Open lesson 1Sustainability and Resource Accounting
Compare resource options using boundaries, units and lifecycle tradeoffs.
Before you begin
- Read or listen to supplied scientific descriptions and follow a labeled diagram.
- Use signed quantities, ratios, exponents and the explicitly supplied model formulas.
Choose by skill rather than age alone. Read with an adult when useful, revisit a lesson, or explore another grade.
Follow the lesson sequence
Compare a service-scaled emission total
Compare a service-scaled emission total using supplied evidence and a solved model.
About 25 minutes, plus any extended practice
Open lesson 2Set a lifecycle boundary
Set a lifecycle boundary using supplied evidence and a solved model.
About 25 minutes, plus any extended practice
Open lesson 3Compare environmental decision claims
Compare environmental decision claims using supplied evidence and a solved model.
About 25 minutes, plus any extended practice
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.
Topic references
- NGSS topic reference: topic reference — Sustainability and Resource Accounting; original supplementary instruction, not a certified alignment claim.
These references informed the topic selection. They do not certify complete standards alignment.