Child direction
Can we make a stock note that someone else can trust? Pick one route. Show what the numbers mean, try a way, then check one result. You can stop after a useful part.
Purpose
Join like whole counts using place-value partitioning.
Complete fictional source
Fictional badge studio: 612 blank badges arrive in one parcel and 243 in another. Every badge is counted once. How many badges are available?
One own invitation
For 304 + 152, give a total and one way to check its parts.
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
Small card repair
Complete task
A fictional game has 42 clue cards, then 15 arrive. Make a total note using tens and ones.
Entry or access
Return to two broad tens and three ones plus one ten 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
Badge maker
Complete task
Use the 612 and 243 badge parcels. Compare partitioning with adding 200, then 40, then 3 to 612.
Entry or access
Use labels rather than 855 loose marks.
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
Archive upgrade
Complete task
A fictional archive joins 2436 and 1523 cards. Show two compatible partitions.
Entry or access
Check thousands/hundreds entry before this larger route.
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.