Identify the Smallest Useful Change
Get one or two plausible explanations and one small change to consider first.
Start with the unit you already have. The Promptbook helps you figure out what is missing and look for the smallest useful addition.
More material is not automatically better.

You do not need to work through every section. Pick the route that matches the problem in front of you.
Already know you need a reading or chapter? Go straight to Find One Unit Resource.
Course and unit are required. Everything else is optional.
Skip anything you do not know or do not need.
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Use this when the unit feels thin, confusing, repetitive, or disconnected but you are not yet sure why.
Get one or two plausible explanations and one small change to consider first.
Use a more systematic check when you still cannot tell whether the problem is content, practice, context, or scaffolding.
Use this when students need to do something with the content, not read one more thing.
Look for an existing activity that directly supports the learning goal.
Use this when you want to compare a small number of openly licensed options and choose the easiest one to adapt.
Use this when the unit needs evidence, texture, a concrete example, or something students can analyze directly.
Focus on credible, usable sources rather than a giant list.
Use this when provenance, accessibility, rights, or context matters as much as the content.
Use this when the unit feels narrow, dated, abstract, or under-contextualized.
Ask for the smallest useful addition that makes the unit less narrow or abstract.
Use this when you need better context or a more deliberate representational choice.
If the diagnosis says the unit does not need another resource, that is a successful result. The Promptbook should reduce unnecessary searching, prep, and student workload, not give you a reason to add something to every week.