Elementary mathematics
Step 1 covers Grades 1–2. All 9 activities for this grade band are now translated into English, with the same quizzes and best-score tracking as the Korean site. Grades 3–4 are live too →
🔢 Number & operations
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Make Ten
Find the number partner that completes ten.
Open English lesson → ✖️Multiplication Arrays
See why groups × items-per-group gives that answer.
Open English lesson →📈 Patterns
📐 Shape & measurement
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Shape Finder
Count sides and vertices, then identify the shape.
Open English lesson → 📦Solid Shape Families
Explore boxes, cylinders, and spheres in the world around us.
Open English lesson → 📏Comparing Things
Compare length, weight, area, and volume.
Open English lesson → 🕐Clock Reading
Read the short and long hands to tell the time.
Open English lesson →📊 Data