An estimate helps. An exact check decides.
Full educator lesson · Pupil invitation · Empty work mat · Optional home activity · Larger project · Written read-together script · Additive Work Bench
Child direction
Pick a made-up supply or budget job. What decision does the arithmetic need to answer? Pick one route. Show what the numbers mean, try a way, then check one result. You can stop after a useful part.
Purpose
Formulate additive practical problems and interpret exact comparisons.
Complete fictional source
A fictional print stand needs 485 handouts. It has 268 in one pile and 124 in another. Is there enough? Separately a pretend art plan has costs $265 and $148, within an invented AUD450 budget.
One own invitation
Budget $300, fictional costs $148 and $153. Does it fit? Give an exact reason.
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 order
Complete task
An invented set needs 90 cards; there are 47 and 36. Find whether more are needed.
Entry or access
Use whole counts rather than a purchase.
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
Art budget
Complete task
Use fictional $265+$148 and $450 budget. State total cost and money left.
Entry or access
No real cash handling or spending follows.
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
Close print decision
Complete task
An invented print target is 2000 sheets, with 987+1018 available. Estimate then decide exactly.
Entry or access
Compare a rough equality with exact five-extra.
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.