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作者：
Bea Kristinsdóttir
Fast free screen recording
Intro tutorial
最新資源
Untitled
Parallelogram Anatomy
The Gardener's Ellipse
The Gardener's Circle
Slope Between 2 Points (Phase 2)
探索資源
Fixed angle of 45 deg
Test
The first activity and the notion of trajectory
Proportional Sides Theorem Pt2
Problem 6: Angle as Rotation
Graphing Solutions to Systems of Inequalities
探索主題
正三角形
3D 向量（三維）
平面
統計特徵
導數