Mathematics Curriculum Guide

Geometry and Measurement

Geometry

In the Area of: Geometry & Measurement

1

 

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  Interpret, draw 3-D objects. -Present visuals and have question and answer session.

-Ask students the question, "how many regular solids are there in the world?"

- Build their own 3-D object.

-See the video- 5 Platonic Solids, then show various modells and discuss the models in groups.

 

  -DGT Resource book p. 213, 'similarity in geometric creatures.'

-Make some of the solids.

 

- Discovering Geometry, p. 527, Investigations 11.1.

- Video:5 Platonic Solids.

Geometry

In the Area of: Geometry & Measurement

 

2

 

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Classify, sort, analyze figures in terms of congruency and similarity.

 

-Lead discussion about where 'similarity' fits in real life.

-Have student discover SAS, ASA, and SSS.

-Discuss the shadow measure of a tree or pole and method to use (similar triangles).

-Make a mural.

-Cut out triangles so they can see SAS, ASA, and SSS.

-Measure the flagpole by the shadow method. Follow up on overhead in class.

- Journal entry on this activity in student portfolio.

- Student portfolio.

-Project on discovery ratio: surface area to volume (i.e., 'why elephants have big ears') DGT p. 619.

-Measure a tree/ pole in their yard or neighborhood.

 

 

- Discovering Geometry, p.593.

- Patty Paper.

- Tape measure.

 

Geometry

In the Area of: Geometry & Measurement

 

3

 

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  Use basic properties of logic & deductive reasoning.

 

- Explain, show students how to solve logic problems.

- Show the use of Venn Diagrams as problem solving tool.

 

- Write their own logic puzzle.

- Perform a variety of Venn diagramming scenarios in groups.

 

  Math Applications.

 

 

Zounds!, p.216.

Geometry

In the Area of: Geometry & Measurement

 

4

 

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  Identify, analyze congruent and similar figures using transformations and coordinates.

 

         

Geometry

In the Area of: Geometry & Measurement

 

5

 

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Analyze properties of Euclidean transformations.

 

Geometry

In the Area of: Geometry & Measurement

 

6

 

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  Develop, deduce properties and relationships between figures from given assumptions.

 

- Introduce geometry sketchpad to students.

- Have students discover theorems on triangles, lines, medians, quadrilaterals.

- Use geometric sketchpad to discover properties and relationships of figures.

- Use the Geometric Supposer in the math computer lab.

 

Journal entry describing class activities.

 

Star polygon project- DGT p. 317.

 

-Discovering Geometry.

-Program in on the computer in lab.

 

Geometry

In the Area of: Geometry & Measurement

 

7

 

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  Use a variety of proof formats (i.e. paragraph, two column, etc.).

 

Demonstrate the indirect method by giving the green-purple people problem. - Do the green- purple people indirect proof.

- Perform the ZEBRA problem.

 

Submit worksheet. Act out the characters in the green-purple people problem (have a play).

 

See green-purple people problem.

Geometry

In the Area of: Geometry & Measurement

 

8

 

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  Use a variety of techniques of proof (i.e. transformational, synthetic, coordinate, etc.).

 

Show connection between paragraph proof and flow chart proof.

 

Create a flow chart from other students' paragraph proofs and vice versa.

 

     

Geometry

In the Area of: Geometry & Measuremen

9

 

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  Use inductive and deductive reasoning through real world applications. - Provide excerpt from, The Adventure of Duncan's Men, by Doyle.

- Show how alternate interior angles were used to measure the earth.

- Read and answer questions to examine the two forms of logical reasoning.

- See how Erastothenes measured the earth.

 

Compare class activity with 'original work'. Extend the problem to a cube with edges: 4, 5, ..., 10.

 

- Discovering Geometry, p. 687

-Geometry - Moise & Downs, p. 299.

 

Geometry

In the Area of: Geometry & Measuremen

10

 

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  Translate between synthetic and coordinate representations.

 

 

Introduce the painted cube problem. &emdash; edge 3&emdash; paint all 6 faces&emdash; How many blocks painted on 3 sides, 2 sides, etc.

 

Complete the chart to generalize for a cube with N edges. Submit a journal write up for the activity. - Stained glass project DGT resource book.

- Try to trisect an angle . Investigate what regular polygons cannot be constructed.

Geometry resource book.

Geometry

In the Area of: Geometry & Measuremen

11

 

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  Develop compass & straight edge constructions in context of geometric theorems. - Demonstrate construction in small groups.

- Show students the BASIC constructions

 

- Do the packet of constructions.

- Go on a,''treasure hunt.' Make a map and students will use constructions to find treasure.

 

Create their own piece of geometric art.

 

Sets goals/parameters for art activity.

 

Discovering Geometry, pp. 3-33.

Geometry

In the Area of: Geometry & Measuremen

12

 

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  Demonstrate and understanding of geometric concepts based on polygons. (i.e. triangles, squares, rectangles, pentagons, hexagons, etc.)

 

 

Explain, explore various polygonal shapes and their properties with students. - Write children's story illustrated with 'tangram' pictures.

- Make the TRI-HEXAFLEXAGON in class.

 

Rubric scoring and sharing of the story book.

 

- Geometry scavenger hunt.- DGT p.325.

- Make the rest of the flexagons.

Martin Gardner's Puzzle Books.

 

Geometry

In the Area of: Geometry & Measuremen

13

 

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  Demonstrate an understanding of geometric concepts based on circles. (i.e. tangents, chords, arcs, etc.).

 

Have students explore concepts through manipulatives. - Carry out various investigations of circle for audience.

- Use the Geometric Supposer on circles.

 

Folding paper circles.

 

Racetrack geometry. DGT , p. 360.

 

 

-Discovering Geometry, p. 201.

- Computer program in lab.

 

Geometry

In the Area of: Geometry & Measuremen

14

 

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  Understand concepts of areas and volumes. - Have students discover the circle theorems. Demonstrate the volume formulas.

- Use plastic models.

 

Use water to show that a cone is 1/3 its cylinder, etc. Use 3-D plastic models. Building a home project. - Discover through measurement the theorems on central angles, inscribed angles, etc.

- In groups, discover the biggest box (volume) that can be made from a 9 x 12 piece of paper.

 

 

-Discovering Geometry, p. 209.

-3-D set of pyramids, cones, etc.

Geometry

In the Area of: Geometry & Measuremen

15

 

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  Perform various activities involving areas and volumes.

 

- Introduce various formulas and an example of exploration of formulas.

- Have students discover Pic's Formula.

- Give presentation on how to derive one of the area or volume formulas using posters and visual aids.

- Be given a worksheet to discover the formula.

 

Work with group to write test items and application problems.

 

Project: Archimedes principles, DGT, p. 562. Use any Pic's formula worksheet or any geoboard investigation of such.

 

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