Good for
- Practising numbers on ones and tens rods
- Reviewing complement formulas without a timer
- Using an on-screen or physical abacus
- A Level 2 student's quick Level 1 warm-up
✦ FREE · NO SIGNUP
Starfriend Rescue: An Abacus Adventure
Free Level 1 abacus concept practice
Practice direct addition and subtraction, friends of 5, and friends of 10 in short, focused missions. Children can move the on-screen soroban or work on a real abacus, with hints and read-aloud support whenever they need them.
No account or paid plan is required. Progress is saved on this device.
✦ ✧ ✦✦
What is Starfriend Rescue?
A focused abacus practice game—not a full course.
Starfriend Rescue gives children five-question missions in direct sums, small friends, big friends, and selected combination formulas. They can move the two-rod on-screen soroban or solve on a physical abacus and enter the answer.
Every question includes an optional bead story showing the calculation one move at a time. The rescue adventure and collectible Starfriends provide a finish line, while the arithmetic stays focused on one technique.
0–99number range
2 rodsones and tens
2–3 rowsper question
5 puzzlesper mission
CURRICULUM DETAILS
Which abacus concepts are covered?
Abacus programs organize their levels differently. This table describes exactly what is currently in Starfriend Rescue instead of promising a universal level match.
| Practice trail | What children practise | Curriculum comparison |
|---|---|---|
| Easy Moves | Direct addition and subtraction with one- and two-digit numbers when the required beads can move without a complement formula. | Early Starters or Level 1 reinforcement; questions use a starting number followed by up to two operations. |
| Friends of 5 | Partial small-friend practice: addition with +2, +3 and +4; subtraction with −2, −3 and −4. | Selected Level 1 small-friend formulas. The +1 and −1 small-friend cases are not yet included. |
| Friends of 10 | Partial big-friend practice: addition and subtraction with 6, 7, 8 and 9 using complements of 10. | Selected Level 1 big-friend formulas. It is not the complete ±1 through ±9 big-friend sequence. |
| Star Mix | Selected combinations that use friends of 10 and sometimes finish with a friend-of-5 move. | Level 1 combination reinforcement after the individual friend formulas are familiar. |
Not included yet
- Formal abacus setup, fingering, or clearing lessons
- The complete small-friend, big-friend, and combination sets
- Hundreds, three-digit work, or four- and five-row sums
- Mental visualization, timed drills, multiplication, or division
For comparison, the official Indian Abacus Starters syllabus includes one- and two-digit addition and subtraction over three to five rows. See the Indian Abacus Level 1 syllabus. Indian Abacus is a trademark of its respective owner; Cute Amor is not affiliated with it.
A QUICK SOROBAN EXAMPLE
See a friend-of-5 move.
Suppose the soroban shows 3 and the question is 3 + 4. There are not enough lower beads left to add 4 directly, so use 4's friend-of-5 relationship.
3 + 4 = 7
+4 = +5 − 1Make 3 + 4 on one rod
- Start at 3: three lower beads touch the reckoning bar.
- Add 5: move the upper five-bead toward the bar.
- Take away 1: move one lower bead away from the bar.
- Read 7: the five-bead and two lower beads now touch the bar.
How Starfriend Rescue works.
Short missions keep the practice focused while the rescue story gives each set a clear finish line.
Screen or real abacus
Move the interactive beads or enter the answer made on a physical soroban.
Bead-by-bead hints
Optional visual stories break each operation into clear, repeatable moves.
Five-puzzle rescues
Practice one skill at a time while collecting friendly Starfriend companions.
Abacus practice for home or lessons.
Starfriend Rescue works as independent practice, a quick warm-up, or a playful follow-up to a soroban lesson.
Is this a Japanese soroban?
Yes. The on-screen tool uses one upper five-bead and four lower one-beads on each rod. The branded Indian Abacus uses colored sliders, so the complement concepts overlap but the physical controls differ.
Do children need a physical abacus?
No. They can use the on-screen soroban, or solve on a real abacus and enter the answer.
Is signup required?
No. The complete game opens free without an account, advertising, or a paid plan.
Does it cover complete Indian Abacus Level 1?
No. It provides focused practice for selected Level 1 concepts; it does not teach or assess the entire official curriculum.
Bring a Starfriend home.
Start a five-question rescue mission and practice at a comfortable pace. Starfriend Rescue is currently free, with no signup required.
Play free—no signup →