Structure
Algebra
Move from equality to variables, linked rules, graphs, and inverse operations.
After-school mathematics for age 13
Math Learning
Play with structure, space, and change. Build ideas before chasing difficult calculations.
One object. Three views.
Move x and watch algebra, geometry, and analysis describe the same parabola.
y = x²
Algebrax = 0, y = 0
GeometryPoint (0, 0)
AnalysisSlope = 0
Choose a path and a lesson
Begin with Lesson 1, or continue to Lesson 2. Every lesson starts with a question you can touch, move, and test.
Space
Geometry
Move from testing diagrams to transformations, congruence, and symmetry.
Change
Analysis
Move from reading change to accumulating small contributions into a whole.
A lesson is a loop
Tap each action. The idea becomes clearer every time around.
Notice
Move one thing and watch what responds.