# Videos How to Use a Graduated Cylinder
This science video demonstrates how a graduated cylinder can help scientists observe and measure the volume of a liquid. Mental Math: Find Quotients
In this video, Carlos learns to divide large multiples of tens using basic division facts. Number Line: Fractions Less Than 1
In this video, Carlos learns how to use a number line to determine the value of fractions. Seal and Octopus: Sense of Touch
Find information and a video about the super sense of touch of the Western Australian sea lion and the blue-ringed octopus as they hunt for food and? Units of Time: Measure Elapsed Time
In this video, Marta learns how to calculate elapsed time using the clock as a visual. Write Rates as Fractions to Find Unit Rate Through Dividing
Help students find a unit rate by dividing the fraction, which is the same as multiplying by its reciprocal. Behavior and Structure of Water Molecules
This video demonstrates the behavior of water molecules under different circumstances that affect their structure and molecular bonds. A glass of? Convert Metric Units of Length
In this video, Carlos learns how to convert between meters and kilometers.