Have you noticed that the moon looks different over the course of the month? Follow along with this fun activity to help you remember the different phases of the moon!

New ReviewIn this episode we explore the different stages of construction of the Stonehenge monument, and when these occurred. Using archeological finds we also find out about who built it, and the different groups of ancient Britons that were...

New ReviewIn this Grade 7 math lesson, students will learn how to determine the distance between the center of a circle and a point drawn on the circle when the radius is given. We begin by reviewing the definition of a circle’s radius and...

New ReviewWhen students are working with circles it seems they always make the same mistakes. In this video I am going to highlight the most common ones students make.

Learn how to find the *area of a circle* with simple, step-by-step examples! In this middle school math lesson, Mrs. C from Math Defined explains how to use the formula *A = πr²* to calculate the area of a circle whether you’re given the...

Write the equation of a circle given the center and the radius.

This video shows ways to make 10, gives practice with make 10 facts and practice completing make 10 facts.



Perfect for kindergarten, 1st grade, and early learners, this video covers essential number bonds, making 10...

A video entitled "Find Surface Area: Cylinder" which shows how to calculate the surface area of a cylinder using the formulas for area of a circle and area of a rectangle.

Learn How to Find the Circumference of a Circle AND the Perimeter of a Semi-Circle!*



Wait… what’s the difference between circumference and *p
erimeter*?
What’s the best way to remember those c
ircle formulas?
And...

Crop circles decoded, and their secrets revealed. They are sometimes beautiful patterns in the middle of a field. They attract tourists from around the world. They have inspired conspiracy...

Chagall combined abstract and figurative painting to create a dreamlike memory of the village where he grew up.

Howcast - Let belly dancer Irina Akulenko teach you how to do wrist circles in this belly dancing video from Howcast.

Howcast - Let professional makeup artist Patricia Longo teach you how to apply concealer in this makeup tutorial from Howcast.

Howcast - Learn how to make a ladybug cake for a kids' birthday party from Essential Cakes' Etwin Gordon in this Howcast video, part 6 of a 7-part series.

Howcast - Learn how to dance to dubstep from choreographer Matt Steffanina in this Howcast dance video.

Howcast - Learn about the best facial treatments for oily skin from licensed esthetician Joanna Vargas in this skin care video from Howcast.

Howcast - Learn what makeup men should wear to appear on TV from media coach TJ Walker in this Howcast public speaking video.

Howcast - Learn how to do side kick inside circles, a Pilates Mat exercise, from Core Pilates NYC instructor Sarah Ruback in this Howcast workout video.

Howcast - Learn to do the side kick internal and external rotation, a Pilates Mat exercise, from Core Pilates NYC instructor Sarah Ruback in this Howcast video.

Howcast - Learn how to do the side kick circle Pilates Mat exercise from Core Pilates NYC instructor Sarah Ruback in this Howcast workout video.

Howcast - Learn how to make tie dye circles in this Howcast video.

Howcast - Learn how to do gymnastics bars moves in this gymnastics training video from Howcast.

Howcast - Learn how to hula hoop around your ankles from hula hooping expert Natalie "McFancy" Wise in this Howcast video.

Howcast - Learn how to crop a photo in this Howcast scrapbooking tutorial featuring expert Carla Sylvester.