Coordinates on a 2-D Grid - PowerPoint

In a Year 4 geometry lesson, students delve into the world of coordinates on a 2-D grid, focusing on the first quadrant. The lesson is designed to help students learn how to describe positions using coordinates. A coordinate grid is divided into four sections known as quadrants, with the first quadrant located at the top right-hand side. Students are introduced to the concepts of the horizontal axis (x-axis) and the vertical axis (y-axis), which serve as the foundation for plotting points on the grid. Coordinates are explained as ordered pairs of numbers that indicate a specific location on the grid, with the x-value representing the horizontal movement and the y-value the vertical movement.

Students are taught to plot coordinates by starting at the origin, marked as 0, and moving 'along the corridor' for the x-value and 'up the stairs' for the y-value. The coordinates are then written in the format (x, y), enclosed in brackets. The lesson includes practical exercises where students find the ordered pair of coordinates for various objects, fruits, and vertices of shapes on different grids. To reinforce the understanding of coordinates, students are also presented with questions that require identifying the coordinates of missing vertices in rectangles. Additionally, a fun coordinates game is introduced, where students can compete to form rectangles on the grid using counters. This interactive approach to learning coordinates helps solidify their understanding of positions on a 2-D grid.