Digital Learning Objects

Trigonometry develops the concept of trigonometry from simple comparisons to more formal approaches.
Trigonometry: measuring with triangles
Trigonometry: similar triangles
Trigonometry: cosine
Trigonometry: sine
Trigonometry: tan
Trigonometry: using sine
Trigonometry: using cosine
Trigonometry: using tan
Trigonometry: find hypotenuse
Trigonometry: find angles

Plasers provides practice in the use of cartesian coordinates and operating with integers. 
Plasers: choose coordinates (+)
Plasers: choose coordinates (+/-)
Plasers: enter an equation (+)
Plasers: enter an equation (+/-)
Plasers: place bubbles (+)
Plasers: place bubbles (+/-)