Instructional Video2:24
CK-12 Foundation

Segments from Secants and Tangents: Lesson

9th - 11th
Squaring the length equals the product of the outside times the whole. The presentation shows how to find a missing length in a tangent segment or secant segment. As part of a geometry playlist, the video provides the formula relating...
Interactive1:40
Scholastic

Study Jams! Measure Length

2nd - 5th Standards
Mia's pet lizard has grown a lot since he was a baby and she needs help measuring his length now that he's an adult. After choosing the best tool for the job, RJ goes step by step through the measurement process, modeling how to use both...
Instructional Video
Khan Academy

Khan Academy: Unit Conversion: Converting Units of Length

6th - 8th
This video tutorial provides information on converting units of length within the same measurement system.