Instructional first

Place Value Regrouping Lab

How does changing units change the way a number is written?

Learnplace value, regrouping, and base-ten structure

DoCompose/decompose units and watch notation update.

WatchRegrouping changes representation while preserving total value.

Number Sense Manipulative LabReady for prediction

model fit 0%

BeforeNo claim yet. Predict before touching the model.

ActionSave prediction, then run the model.

AfterWaiting for a visible result.

Visible result

No run yet

The model will show cause and effect after you save a prediction and run it.

slope fit95%start value95%residual3transfer96%

Step 3

Defend why two regrouped representations have the same value.

Misconception signal

Common trap: digit position is decoration

Intervention

Mastery gate: Represent, compare, and operate on quantities while preserving unit meaning.

Learning evidence

Ready for transfer.