Sunken Ships and Grid Patterns (2-D Geometry); Grade Level 4 (Investigations in Number, Data, and Sp

Students make coordinate mystery pictures and measure distances on a grid; play sunken ships, identifying points on the grid and using distance feedback to select a next possible location; discuss properties of rectangles; and write rectangle procedures for the computer using Geo-Logo. Downloadable software. Suggested pacing: 15 sessions.