ADVANCING RESEARCH, IMPROVING EDUCATION                               

The National Center for Quality Afterschool

Helping local practitioners and state education agencies develop high-quality and balanced programs

About the Center

Afterschool Lesson Plan Database

Lesson Plan

Geometry: Hide and Seek
Subject: Math
Grade span: 6 to 8
Duration: 10 to 20 minutes
This lesson was excerpted from the Afterschool Training Toolkit under the promising practice: Math Games

Description:

This is an example of a Math Game that builds geometry skills. In this activity, students hide geometric shapes on coordinate grids while others try to find the vertices from hints.

Learning Goals:

Materials:

Preparation:

What to Do:

Teaching Tips:

Getting Started:
Students may have a question about how to start, and it may be helpful to talk with them about how the playing grid works and the vocabulary that relates to it: x-axis (the horizontal axis), y-axis (the vertical axis), ordered pair, (x-coordinate, y-coordinate), vertex, edge, and the names of common geometric shapes, from triangle through octagon.

Students may begin by using their own informal terms, which is fine, but be sure to check their understanding of the underlying concepts, and encourage them to order their points in an x,y sequence. For instance, even if they are using terms like "four points up" or "three to the right," ask them to put the horizontal direction first.

During Play:
As students play, encourage the group seeking the figure to talk about how they will keep track of each guess, and which of the four conditions each guess met. The hider should tally the number of guesses.

The students' language to refer to the points may be ambiguous. Phrases like, "the point all the way at the left" or, "just below the last point" may come up. If you hear something like this, ask the seekers how the hider will know how to answer and whether there is a more concise, less ambiguous way to refer to a point. This way, students may see the value of the (x,y) ordered-pair approach, which does not depend on outside references and is less ambiguous.

If someone draws a circle, or another shape that is not a polygon, ask them to draw a regular polygon instead, but as time allows discuss circles or curves after the play.

After Play:
Ask students to review their strategies. Were some figures harder to find than others? Why? How did they keep track of what they had discovered?

Evaluate (Outcomes to look for):

Standards:
Click this link to see additional learning goals, grade-level benchmarks, and standards covered in this lesson.

Online Training for Afterschool Staff
The Afterschool Training Toolkit is available online free of charge.

The following resources can be used with the online Afterschool Training Toolkit to give you the resources you need to build fun, innovative, and academically enriching afterschool activities.