**Coordinate Geometry**

This unit of work builds on work from Year 7 Summer 1. As the current Year 9 will not have had those lessons, I have included them here as the first three lessons.

I have also added a Desmos activity “Des-Face”.

Pre-lesson 1 |
Coordinate squares |

Pre-lesson 2 |
Coordinate rectangles |

Pre-lesson 3 |
Horizontal and vertical lines |

Pre-lesson 4 |
Des-face using Desmos – teacher guide |

As several of the lessons below require the use of computers or tablets, there may be an issue with booking equipment. The starred lessons can be left out, or completed at a later date.

It is recommended that some time is spent in departments familiarising yourselves with the Desmos classroom lessons. Here is a simple start up guide if you have never used it before.

Lesson 1 |
Points on a line |

Lesson 2 |
Midpoints |

Lesson 3 |
Boat hire |

Lesson 4 |
Comparing expressions |

Lesson 5 |
Baseball Jerseys |

Lesson 6 |
Rules that connect coordinates |

Lesson 7 |
Plotting lines using a table of values |

Lesson 8 |
Finding a measure of slope |

Lesson 9 |
Desmos classroom – polygraph part 1 and 2 |

Lesson 10 |
Desmos classroom – put the point on the line |

Lesson 11 |
Investigating y = mx + c using Desmos |

Lesson 12 |
Defining lines by points, gradients and equations |

Lesson 13* |
Desmos classroom – Match my line |

Lesson 14* |
Desmos classroom – land the plane |

Lesson 15* |
Desmos classroom – Marble slide |

Lesson 16 |
Parallel lines |

Lesson 17 |
Perpendicular lines |

Lesson 18 |
Finding the x-intercept of a straight line |