Measurement & Time
17 problem types
Length as Sum of Parts with Unit Matching
Find one handspan from measured counts 2.MD.A.12.MD.B.5 · adapt
Smaller unit, more measured counts 2.MD.A.1 · adapt
Bigger units express numbers more simply 4.MD.A.14.MD.A.2 · adapt
Convert to one unit, then compare lengths 2.MD.A.14.MD.A.1 · adapt
Match units before comparing path lengths 4.MD.A.14.MD.A.22.MD.A.4 · adapt
Sum distances and times across legs 4.MD.A.24.MD.A.13.MD.A.1 · adapt
Total length is the sum of its parts 4.MD.A.14.MD.A.22.MD.B.5 · adapt
Elapsed Time and Base-Sixty Regrouping
Find a future date using days per month 1.MD.B.3 · adapt
Compare hours first, then minutes 2.MD.C.7 · take
Read the hour when the hand is between 2.MD.C.7 · take
A drifting clock accumulates daily error 3.MD.A.13.OA.A.3 · take
AM and PM make a 24-hour day 3.MD.A.1 · take
Elapsed time between two clock times 3.MD.A.12.MD.C.7 · take
Reach the next hour, then add the rest 2.MD.C.73.MD.A.1 · take
Read a mirrored clock, then find elapsed time 2.MD.C.73.MD.A.1 · take
Reason about a fast or slow clock 3.MD.A.1 · take
Time regroups in base sixty 3.MD.A.1 · take