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- Grade Range
- 9th - 12th
- Rating
Students examine and discuss techniques using trigonometric ratios for right triangles. They observe examples of trigonometric ratios, discuss alternative methods for checking their results, and complete a worksheet. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students explore how trigonometry is related to triangles. They examine the use of trigonometric functions for sine, cosine, and tangent. Students identify and use formulas for the law of sines and cosines. Full Review »
- Grade Range
- 9th
- Rating
Students create clinometers using a protractor, weight, and string. They work in pairs to practice sighting objects above or below their line of sight. Students use ratios of right triangles to determine the height of a predetermined object. Full Review »
- Grade Range
- 6th - 8th
- Rating
Students calcute distances using trigonometry and angle measurements. They estimate the width of the Trig River, measure it and compare their results with their classmates. They collaborate with a group to research and find the results. Full Review »
- Grade Range
- 9th
- Rating
Students find the height of an object that would be difficult or impossible to measure directly. They construct and use a Clinometer to measure the angle of elevation (or depression). Students create a sketch of the measurement situation using a right triangle, indicate relevant points in the physical situation, and use basic trigonometric ratios to calculate the desired lengths. Full Review »
- Grade Range
- 9th
- Rating
Students observe and solve problems involving similar triangles and ratios. They observe the teacher modeling examples of ratio of height to base, setting up a proportion, rate of speed, density, and rate of exchange of money. Students independently solve practice problems and discuss the solutions with the class. Full Review »
- Grade Range
- 9th
- Rating
Students use indirect methods, including the Pythagorean Theorem and right triangle trigonometry to find missing dimensions. They use trigonometric functions to solve problems involve unknown sides and angles. They discuss the characteristics o triangles and the Pythagorean Theorem. Full Review »
- Grade Range
- 5th
- Rating
Students explore the importance of triangles in the real world. They find the unknown side of a right triangle using a scale drawing. Students use Pythagoras' Theorem and other appropriate ratios. Full Review »
- Grade Range
- 8th
- Rating
Students use prior knowledge and strategy to explore and attempt to solve a given trigonometry word problem. They complete hands-on labs in which they explore the relationship between the legs and hypotenuse in given triangles. Full Review »
- Grade Range
- 5th - 12th
- Rating
Students explore how changing an angle in a triangle changes the ratio of the sides. They also explore how changing the sides can make changes to an angle in a triangle. Students determine how two different pairs of sides, in the same ratio, will give them the same angle. Full Review »
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