Learner course

Your Learning Journey

Choose the next lesson. Completed lessons are saved on this device in the starter build.

1

World 1

Meet the Soroban

1Meet the SorobanRods, the bar, and the two kinds of beads.›2Clear to ZeroZero means no beads touch the bar.›3Make 1–4Count with lower beads only.›4Meet 5The upper bead is worth five.›5Make 6–9Five plus lower beads.›6Numbers 0–9Make, read, and clear.›

2

World 2

Numbers and Place Value

1Ones RodThe rightmost rod is ones.›2Tens RodThe next rod left is tens.›3Make TensBuild tens with an empty ones rod.›4Make 11–19One ten plus ones.›5Two DigitsNumbers across tens and ones.›6Place Value CheckRead and build two-digit numbers.›

3

World 3

Direct Addition and Subtraction

1Add OneMove one more bead toward the bar.›2Add Lower BeadsDirect addition with free lower beads.›3Add FiveMove the five-bead down.›4Addition PracticeOnly moves that the beads can do directly.›5Take AwayMove beads away from the bar.›6Subtraction PracticeDirect subtraction only.›7Direct CheckAdd and subtract without complements.›

4

World 4

Friends of 5

1Friends of 51 with 4, and 2 with 3.›2Add with 5Add 5, then take away the friend.›3More Friends of 5More addition around the five-bead.›4Subtract with 5Take the five away, then add its friend.›5Mixed Friends of 5Add and subtract with the five-bead.›6Friends of 5 CheckA short friends-of-5 check.›

5

World 5

Friends of 10

1Friends of 10Pairs that make ten.›2Add Across TenAdd ten, then take away the friend.›3More Across TenMore carrying with a friend of 10.›4Subtract Across TenTake ten, then add the friend.›5Mixed Friends of 10Carry and borrow.›6Friends of 10 CheckA short carrying and borrowing check.›

6

World 6

Mixed Practice

1Choose the MoveDirect, friend of 5, or friend of 10.›2Mixed AdditionDirect and complement addition.›3Mixed SubtractionDirect and complement subtraction.›4Two-Digit MixWork across tens and ones.›5Picture ItRemember the beads for a moment.›6Course ChallengeA calm mix of everything so far.›