Explore this video and the interactive learning objects to explore the mathematical relationships in three term ratios. The subject of photography is used to connect mathematical concepts with real world problems.
This activity has several different components (topics). Try the activities in each topic to assess your understanding of estimating, constructing and labelling angles.
Use this learning object to select a geometric solid and adjust its dimensions to see how the changes affect surface area and volume. Compare different solids and see how each can be described in two dimensions (nets).
This activity challenges students to select the function, reference angle and side of a right triangle. The interactive will calculate and display the ratios. After exploring sine, cosine and tangent, the user can play a game of Trig Golf.
This website is a gateway to a collection of engaging videos about mathematics and numbers. The Numberphile site features their most recent videos; many more videos are hosted on their YouTube channel, linked from this page.
This video tells the story of physicist Enrico Fermi, who was very good at making fast estimations of big number problems. Learn how he used the power of 10 to make reasonable estimates of large numbers (like how many piano tuners in the city of Chicago).
When two triangles are similar, the reduced ratio of any two corresponding sides is called the scale factor of the similar triangles. What does that mean? Watch this video about the king's decision to partition his land to understand more about scaling and similarity.
This animated video explores "the mind-bending concept of the “infinity of infinities” -- and how it led mathematicians to conclude that math itself contains unanswerable questions."
Universcale provides a look at objects from sub-atomic particles to red giants and all things in between using an interactive scale. This graphically beautiful tool is an outstanding way to measure and compare objects of different sizes.