 Author:
 DAWNE COKER
 Subject:
 Mathematics
 Material Type:
 Activity/Lab, Lesson, Lesson Plan
 Level:
 Lower Primary
 Tags:
 License:
 Creative Commons Attribution
 Language:
 English
 Media Formats:
 Downloadable docs
Education Standards
T4T Polygon Riddles and Fun
Overview
This resource is from Tools4NCTeachers.
In this lesson, students create polygons on geoboards and record the polygons on geodot paper. They write riddles about the polygons and have classmates guess their shape. Printable Geodot paper and student work pages are included within this lesson.
Remix this lesson to include related math centers and pictures of student work.
Here is a sample of this resource. Click the attachment to download the entire fullyformatted lesson and support materials.
In this lesson, students create polygons on geoboards and record the polygons on geodot paper. They write riddles about the polygons and have classmates guess their shape. 
Polygon Riddles and Fun
NC Mathematics Standard(s):
Geometry
Reason with shapes and their attributes.
NC.2.G.1 Recognize and draw triangles, quadrilaterals, pentagons, and hexagons, having specified attributes, recognize and describe attributes of rectangular prisms and cubes.
Standards for Mathematical Practice:
1. Make sense of problems and persevere in solving them.
2. Reason abstractly and quantitatively.
3. Construct viable arguments and critique the reasoning of others.
4. Model with mathematics.
5. Use appropriate tools strategically.
Student Outcomes:
 I can identify triangles, quadrilaterals, pentagons, and hexagons.
 I can define shapes by the number of sides and angles for triangles, quadrilaterals, pentagons, and hexagons.
 I can create a given shape when given defining attributes.
Materials:
 Geoboards
 Geobands
 The Greedy Triangle by Marilyn Burns
 Folder or other material to use to cover
 Vocabulary word bank
Advance Preparation:
 Teacher should refer to the “Parent, Teacher, and Other Adult” page in The Greedy Triangle for math content information before teaching this lesson.
 Students should be familiar with defining attributes such as number of sides, number of angles, equal, and vertices (corners) through introductory lessons that build understanding of this vocabulary. Also, students should continue to use the vocabulary introduced in first grade which includes open, closed, rectangles, squares, trapezoids, triangles, halfcircles, and quarter circles.
 A vocabulary Word Bank needs to be accessible to the students that they can use when describing their polygons. Examples for the word bank include but are not limited to:
equal, sides, angles, vertices, square, rectangle, triangle, pentagon, hexagon, trapezoid
Directions:
 Review vocabulary on the Word Bank by having students work in small groups to come up with definition that can be explained in ten words or less for one of the words in the bank. Teacher can assign words or let groups choose the word they would like to define. Allow groups to share the definition they created. This should be a quick review.
 Distribute geoboards and geobands. It is easier to distribute these materials if the geobands are already placed on top of each geoboard or if the geobands are in the container that is shared with a small group. (It is important that students know the rules for using geoboards so that the lesson will not be interrupted by someone shooting the rubber bands. If the teacher addresses this and the students are familiar with using them distractions are minimized. Also, for those students who can not follow the rules, the teacher can have a paper copy of a geoboard and a pencil for them to use in place of the geoboard. If students know this is an option they are more likely to follow the rules so they can keep their geoboard.)
 Ask students to make two different polygons on their geoboard. Have them record the polygons on their geopaper. If this is the first time they are recording on geoboard paper the teacher may need to circulate and make sure they are accurate in their transcribing. Now ask students to use the vocabulary just reviewed to explain how the shapes are alike and how they are different.
 As students work, the teacher monitors and questions students to help them think of other ideas. If students are struggling, the teacher may want to share a few similarities or differences that students have constructed. This would be a good time to take anecdotal notes on how comfortable the students are with using with the vocabulary. The attached recording sheets are provided as tools for assessment. One is a calendar grid where the students names are written in the squares and notes are added to each square. The other is a traditional recording sheet where check marks or other notations are used to document students’ progress.
 When students begin to finish, have them share with a partner or small group and then add to their similarities and differences any new ideas they learned from their group. Have students use a highlighter to highlight any words from the word bank they used in their work. If they used a new math word that needs to be added to the word bank they can highlight it with a new color and add it to the Word Bank.
 Teachers can then collect these for assessment and they could be displayed in the classroom.
 Part 2 of this task may be completed on a different day. Begin Part 2 by having students make a polygon on their geoboards. Students would use a folder to cover the shape so that others could not see it.
 Students are then asked to write 4 clues to describe the polygon they created. Again they can use the Word Bank to help with their clues. An example, 1. My shape has 4 sides. 2. It has 4 vertices. 3. The angles are like an L (right angles). 4. All the sides are the same length. (square)
 As students write clues the teacher will monitor and encourage students to use very clear mathematical vocabulary. This is another good time to assess students’ understanding of the shapes they are creating.
 When they finish writing the four clues they find a partner that is finished and play “Polygon Riddle” by reading their clues to their partner and the partner guesses which polygon they created. Continue to play by finding additional partners when they finish.
 These riddles can be collected and put in a “Polygon Riddle” book for continued review throughout the year.
Questions to Pose:
Before:
What do we know about these words?
What are the rules for using a geoboard?
What do you know about polygons?
During:
What else do you know about this shape?
Which words in the word bank would help you compare the shapes you made?
Are there other math words you are using to help compare the shapes? What are they?
After:
Do we know more about the words in the word bank now they we did when we started with our definitions? If so what?
Write in your math journal or on a blank sheet of paper what you learned today about shapes you or someone in your group made on your geoboard.
Possible Misconceptions/Suggestions:
Possible Misconceptions  Suggestions 
Avoid having students memorize the properties of the shapes.  Students need to have many experiences that allow them to explore, compare, and move shapes around. 
Students may think that a hexagon always looks like the yellow pattern block.  Show regular and irregular pentagons and hexagons. The use of a geoboard is a good way to have students explore the various shapes. 
Students should be required to use mathematical vocabulary.  Supplying the word bank will help with this as well as encouraging discussion among students. 
Special Notes:
This task addresses only twodimensional geometry and would require additional work for threedimensional.
It is important that students know the rules for using geoboards so that the lesson will not be interrupted by someone shooting the rubber bands. If the teacher addresses this and the students are familiar with using them distractions are minimized. Also, for those students who can not follow the rules, the teacher can have a paper copy of a geoboard and a pencil for them to use in place of the geoboard. If students know this is an option they are more likely to follow the rules so they can keep their geoboard like the rest of the class.
Solutions: N/A
Recording Sheet Standard: __________
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 Name of student is written in each space.  Standard(s) 



 



 



 



