This site is a series of video lectures and interactive exercises for teaching basic mathematics skills to first graders. It has separate addition and subtraction skills reviews numbers up to 10, 20, and 100; a section on telling time and reading clocks as well as course material on measurement and geometry.

The CyberSquad tests which broom can travel the furthest in five seconds in this video from Cyberchase.

The CyberSquad tests which broom can travel the furthest in five seconds in this video from Cyberchase.

Children will learn measurement and the measureable attributes for time in this interactive game from FETCH! with Ruff Ruffman. Ruff sometimes needs his assistant to do silly things. They have one minute to do things like spin around in circles, jump up and down, or even stand perfectly still. Don't worry, it only takes a minute! Available in Spanish.

Take the math challenge. Can you figure out how long you have to wait in line to buy a ticket? An estimation and time measurement challenge from the NCTM Math Challenges for Families collection. Based on real-world themes and application. Hints are included, if you need them.

In this video segment from Cyberchase, through addition and regrouping in base sixty, Matt helps Digit figure out what time his CyberSoufflŰ__ŒŰÖ will be done.

This short video and interactive assessment activity is designed to teach fourth graders about finding time using multiple steps - word problems.

This short video and interactive assessment activity is designed to teach fifth graders about finding time using multiple steps - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about finding the total distance between two objects.

This short video and interactive assessment activity is designed to teach fifth graders about finding the total distance between two objects.

This short video and interactive assessment activity is designed to teach fourth graders about finding the total time given a distance between two objects.

This short video and interactive assessment activity is designed to teach fifth graders about finding the total time given a distance between two objects.

This short video and interactive assessment activity is designed to teach fourth graders about determining rate.

This short video and interactive assessment activity is designed to teach fifth graders about determining rate.

In this video segment from Cyberchase, Harry decides to train as a firefighter and uses line graphs to chart his physical fitness progress.

This short video and interactive assessment activity is designed to give fourth graders an overview of the time challenge ii lesson.

Time: It’s Like, So Deep — explores common difficulties with understanding the immensity of the geologic time scale (often referred to as “deep time”) and suggests approaches to help students grapple with this transformative concept. Explore the research: http://s.si.edu/1IwH5zS

In Module 8, the final module of the year, students extend their understanding of part–whole relationships through the lens of geometry.  As students compose and decompose shapes, they begin to develop an understanding of unit fractions as equal parts of a whole.

Find the rest of the EngageNY Mathematics resources at https://archive.org/details/engageny-mathematics.

First let's review position, velocity and acceleration vs. time curves. This video [2:56] focuses on developing mathematical formulas to do three things: Describe how particles move, how particles collide, and track particles forward through time.

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

The Center for Mathematics and Science Education at the University of North Carolina at Chapel Hill provides an interesting and easy-to-use dictionary of the history and meaning of many measurement terms. Metric, International, and English Customary Systems are included; but there are also explanations of Apgar scoring, hat sizes, radiocarbon year conversion, and many other tables and scales.