GeoGebra
GeoGebra
  • Home
  • News Feed
  • Resources
  • Profile
  • People
  • Classroom
  • App Downloads
About GeoGebra
Contact us: office@geogebra.org
Terms of Service – Privacy – License

© 2023 GeoGebra

Quarter the Cross: 4 Dot Challenge

Author:
John Golden
Topic:
Area, Fractions
David Butler has written a lot about one of my favorite math activities, but has a new wrinkle on it. Given four dots in the cross, can you shade in a quarter that contains all four? Read more: https://blogs.adelaide.edu.au/maths-learning/2020/11/15/quarter-the-cross-connect-the-dots/

New Resources

  • Paradoxes on π
  • Arc Length Question Generator
  • Open Middle Arc Length Exercise
  • Which Segment is Longer? (V2)
  • Open Middle: Graphing Linear Inequalities (2)

Discover Resources

  • Relationships among Ars, Chords and Angles (Part b)
  • Properties of Scalar Product
  • Altitudes from vertices of triangle to its sides manal9 th1
  • Two DynaGraphs Modified
  • OER_6.1.12.5

Discover Topics

  • Unit Circle
  • Equations
  • Indefinite Integral
  • Symmetry
  • Vectors

GeoGebra

  • About
  • Partners
  • GeoGebra on Tests
  • News Feed
  • App Downloads

Apps

  • Calculator Suite
  • Graphing Calculator
  • 3D Calculator
  • CAS Calculator
  • Scientific Calculator

Resources

  • Classroom Resources
  • Learn GeoGebra
  • Classroom
  • Geometry
  • Notes
  • Terms of Service Privacy License
  • Facebook Twitter YouTube