Center for Innovation in Mathematics Teaching
Trigonometry
This unit covers the basic trigonometry including understanding radians, how to convert between radians and degrees, the area of a circle subtended by an angle, basic properties and graphs of sine, cosine, tangent, and solving...
Texas Instruments
REAL LIFE REAL WORLD Activity - Surveyor
Learners investigate surveying in this secondary mathematics lesson. They will explore a real world application of geometry and trigonometry as they create a plot plan using a geometry utility and calculate the area of the land parcel.
Curated OER
The Merry Go Round Problem
In this algebra worksheet, 9th graders analyze a concetric circle to determine the area a worker must paint in two different colors. They must decide from which angle he start painting because of the location of the merry go round. There...
Curated OER
Estimating Pi as a Length
In this pi activity, students evaluate the curve of a quarter of a circle. They analyze the length of the curve, and explain that if the area under the curve is equal to pi, the length of the curve above is also equal to pi. Students...
Curated OER
Spitzer Sees a New Ring Around Saturn
In this Saturn's rings learning exercise, students read about the Spitzer telescope that detected a new ring around Saturn. Students solve 6 problems including determining the formula for the area of a circle, finding the volume of the...
Curated OER
Counting Craters on the Hubble Space Telescope!
In this Hubble Space Telescope worksheet, students are given a photograph of the radiator recovered after being in space on the Hubble Space Telescope since 1993. Students solve 6 problems about the impacts that left craters on the...
Curated OER
Hula Hoop Biodiversity
Students determine the biodiversity in a variety of different areas. They record everything they can about their site- including drawing a picture of all the different plants they see in their hula hoop, in the circle on their page.
Curated OER
Reference Angles
Learn how to measure the reference angles in degrees and radians. Learners find reference angles that are coterminal with a given angle.
Curated OER
Travel Triangles
Students demonstrate and understanding of the three types of angles using triangles and quadrilaterals. In this angles lesson plan, students learn about acute, obtuse and right angles. They use cut-outs to find the areas of triangles and...
Curated OER
Exploring the Orthocenter of a Triangle
Young mathematicians explore the concept of triangles as they construct altitudes of triangles to find the orthocenter. Learners construct their triangles using Cabri Jr. on their graphing calculators and find that the altitudes of a...
Curated OER
Around The Stop Sign
Students analyze a drawing of a regular octagon inscribed in a circle to determine angle measures, using knowledge of properties of regular polygons and the sums of angles in various polygons to help solve the problem. They use...
Curated OER
Let's Recycle
In this activities about recycling worksheet, students identify items recycled in their area, solve a maze, and color the pictures. Students write 11 answers.
Curated OER
Gateway Arc Length
Learners differentiate and calculate the length of an arc. They define an arc and relate it to the area of a circle and integrate the function to solve the equations. Students use their TI calculators to graph the equation.
Curated OER
Great Graphing
Students collect data, use a computer spreadsheet program to create various graphs, and compare the graphs. They state the findings of each graph in writing and decide which graph type best represents the data.
Curated OER
Oil Search
Students participate in a mock oil search game and attempt to find "oil" in a model oil field. They drill initially based on random guessing, but each time they drill they use prior knowledge to determine where to drill next. They must...
Curated OER
Powerful Polygons
Students scan the classroom to find different common shapes. They listen as the teacher defines polygon and regular polygon. The teacher demonstrates regular polygons via the Internet and the "Math is Fun" web site. Students go outside...
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Composition of the Atom
Learners investigate the structure of the atom and its composition. In this atom structure lesson, students find the area of cut out circles and drop pens into the circles. They count the number of marks in the circles and relate their...
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Traditional American Indian Lodges
Students explore the mathematical properties of traditional American Indian lodges. They examine the effect of increasing sides of a polygon, calculate the surface area of prisms and cylinders, and construct a classroom size pyramid...
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Kepler-The Hunt for Earth-like Planets
In this hunt for planets activity, students read about the Kepler satellite used to detect exoplanets. Students solve 6 problems including drawing a sun disk and determining the scale in kilometers/millimeter, finding the area of the Sun...
Curated OER
FAMOUS NAMES
Students study some important people and events in French culture. They complete a worksheet and circle every item that is associated with France. They respond to written cues identifying the country's language and culture.
Curated OER
Respecting Diversity- The Road to Tolerance
Middle schoolers use a graphic organizer to find similarities and differences in three religions. In this prejudice lesson, students understand the events leading up to the holocaust. Middle schoolers understand that people who respected...
Curated OER
Trigonometric Ratios
Learners investigate properties of the unit circle using sine, cosine and tangent. They analyze the answers to questions about the unit circle based on a right triangle.
Curated OER
Solar Storms-Fractions and Percentages
In this solar storms worksheet, learners find the percentage of X-Flares and Halo CMEs that occurred in solar storms and complete a Venn Diagram comparing the numbers of each.
Curated OER
Aboriginal Statistics
Fourth graders analyze statistics of Native Americans by creating graphs. In this data analysis instructional activity, 4th graders define different statistical terms and practice finding those statistics from groups of numerical...