Lessons and Activities

Drawing Plan & Coord Systems

Coordinate system illustrates the connection between the position of a point and its coordinates.

• Grade Level(s):

  Gr. 8 | Age 14, Gr. 9 | Age 15, Gr. 10 | Age 16, Gr. 11 | Age 17, Gr. 12 | Age 18

• Subjects:

  Mathematics

• Language:

  English

• Posted:

  Jun. 12, 2009

Posted by:

Anonymous

Finding the Centroid

This lesson shows the steps to find the centroid

• Grade Level(s):

  Gr. 9 | Age 15, Gr. 10 | Age 16, Gr. 11 | Age 17

• Subjects:

  Mathematics

• Language:

  English

• Posted:

  Jun. 12, 2009

Posted by:

Anonymous

Random Trig Problems

This movie simply generates an endless sequence of trigonometry problems in right-angled triangles, then gives the answer with working out.

• Grade Level(s):

  Gr. 8 | Age 14, Gr. 9 | Age 15, Gr. 10 | Age 16

• Subjects:

  Mathematics

• Language:

  English

• Posted:

  Jun. 12, 2009

Posted by:

Anonymous

Online Calculator

eCalc is a free online calculator that supports many advanced features including unit conversion, equation solving, and even complex-number math....

• Grade Level(s):

  Gr. 7 | Age 13, Gr. 8 | Age 14, Gr. 9 | Age 15, Gr. 10 | Age 16, Gr. 11 | Age 17

• Subjects:

  Mathematics

• Language:

  English

• Posted:

  Jun. 12, 2009

Posted by:

Anonymous

Conic Sort

The objective is to have students classify conics.

• Grade Level(s):

  Gr. 9 | Age 15, Gr. 10 | Age 16, Gr. 11 | Age 17

• Subjects:

  Mathematics

• Language:

  English

• Posted:

  Jun. 5, 2009

Posted by:

rmielec

Great Circle Path

Students will learn that spherical geometry differs from ordinary Euclidean geometry, and will explore finding the "great circle distance."

• Grade Level(s):

  Gr. 7 | Age 13, Gr. 8 | Age 14, Gr. 9 | Age 15, Gr. 10 | Age 16, Gr. 11 | Age 17, Gr. 12 | Age 18

• Subjects:

  Mathematics

• Language:

  English

• Posted:

  Jun. 1, 2009

Posted by:

Anonymous

Congruent Triangles

To show that any corresponding parts of a triangle are congruent.

• Grade Level(s):

  Gr. 9 | Age 15, Gr. 10 | Age 16, Gr. 11 | Age 17

• Subjects:

  Mathematics

• Language:

  English

• Posted:

  Jul. 12, 2008

Posted by:

bhelveston   

Exterior Angles of a Polygon

To find the sum of the measure of exterior angles of polygons with different sides.

• Grade Level(s):

  Gr. 8 | Age 14, Gr. 9 | Age 15, Gr. 10 | Age 16

• Subjects:

  Mathematics

• Language:

  English

• Posted:

  Jul. 12, 2008

Posted by:

bhelveston