Child direction
Make a plan for a collection that crosses a ten or a hundred. Pick one route. Show what the numbers mean, try a way, then check one result. You can stop after a useful part.
Purpose
Regroup an addition without changing its value.
Complete fictional source
An invented costume cupboard has 364 tags, then receives 278 tags of the same kind. Find the new count.
One own invitation
Try 258 + 167. Show the regroup or describe it exactly.
Access
Show, draw, type, sign, use your usual communication or direct an agreeing helper. Choose quiet/private work, switch a route, pause, pass or finish. One useful part is enough. A helper can read the exact words or scribe your choices; supplying an operation, count, regrouping or reason is mathematical help and is named. No speed, neatness, speech, handling or device requirement.
Routes
Id
A
Title
Game counters
Complete task
There are 28 fictional counters and 17 more. Show what happens to fifteen ones.
Entry or access
Build one ten from ten labelled ones if needed.
Access
Show, draw, type, sign, use your usual communication or direct an agreeing helper. Choose quiet/private work, switch a route, pause, pass or finish. One useful part is enough. A helper can read the exact words or scribe your choices; supplying an operation, count, regrouping or reason is mathematical help and is named. No speed, neatness, speech, handling or device requirement.
Id
B
Title
Picture station
Complete task
Use 527 and 186 cards. Make a checkable regrouping note.
Entry or access
Keep each place-value amount visible.
Access
Show, draw, type, sign, use your usual communication or direct an agreeing helper. Choose quiet/private work, switch a route, pause, pass or finish. One useful part is enough. A helper can read the exact words or scribe your choices; supplying an operation, count, regrouping or reason is mathematical help and is named. No speed, neatness, speech, handling or device requirement.
Id
C
Title
Print store
Complete task
Join 2687 and 1756 imagined sheets. Compare adding chunks with place-value regrouping.
Entry or access
Use this only after thousands can be renamed.
Access
Show, draw, type, sign, use your usual communication or direct an agreeing helper. Choose quiet/private work, switch a route, pause, pass or finish. One useful part is enough. A helper can read the exact words or scribe your choices; supplying an operation, count, regrouping or reason is mathematical help and is named. No speed, neatness, speech, handling or device requirement.