Turtle Pond

  • Turtle Pond

    Grade: PreK to 2nd, 3rd to 5th, 6th to 8th

    Guide a turtle to a pond using computer commands.

    Activity

    Instructions

    Controls

    The objective of Turtle Pond is to get the turtle to the Pond. There are four moves:

    1. Forward
    2. Backward
    3. Left Rotation
    4. Right Rotation

    Create a sequence of moves by using the four action buttons. Once a movement is selected, you will be prompted to enter how many units to move, or how many degrees of rotation to turn.

    Toolbar

    There are six toolbar features (left to right, up to down):

    1. Erase previous recorded move, or a highlighted move.
    2. Erase the entire table.
    3. Create a new maze.
    4. Turning at right angles vs. ability to turn: 15, 30, 45, 60, 75, or 90 degrees.
    5. Create obstacles.
    6. Show a grid to help count the units.

    Play Bar

    • There is also a play bar that will help play the entire sequence of moves (use the slider to adjust the speed, and stop or pause to halt the play).
    • You can also use the fast-forward and rewind button to play the moves one by one.

    Exploration

    Enter a sequence of commands to help the turtle get to the pond. The turtle will then move along a path according to your instructions.

    • How far does your turtle travel to get to the pond?
    • Can you find a shorter path to the pond?
    • How long is the shortest path to the pond?

    Set forward = 5, back = 7, right turn = 30, and left turn = 75. Using only these possible moves, guide the turtle to the pond. Try the same activity using different values for the four moves.

    Objectives and Standards

    NCTM Standards and Expectations
    • Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles.
    • Apply geometric concepts in modeling situations
    • Pre-K - 2
    • 3-5
    • 6-8
    • Geometry
    • Measurement