Radius Teacher Resources
Find Radius educational ideas and activities
Showing 61 - 80 of 2,478 resources
How Do You Find the Area of a Circle if You Know the Diameter?
Do you know the formula to find the area of a circle? Do you know the value of pi? Do you know what the relationship is between diameter and radius? Yes? Then you can solve this problem. If your scholars don't know this formula then this is a good way to introduce them to all the variables in the formula.
4 mins 6th - 8th Math
How Do You Find the Volume of a Cone?
The formula to find the volume of a cone is volume equals one-third times the base times the height. The base can be found by using the formula to find the area of a circle: base equals pi times radius squared. So it seems that the area of the base needs to be found to solve for the area of a cone.
5 seconds 6th - 10th Math
How Do You Find the Volume of a Cylinder?
What is the formula to find the volume of a cylinder? Here's the formula - volume equals base times height, and the base of a cylinder is base equals pi times radius squared. If the is a given value for radius, and a given value for height, then the volume of the given cylinder can be found.
5 mins 6th - 10th Math
Circles - Homework 16.7
In this circles learning exercise, students answer questions showing their understanding of center, radius, diameter and chord. Some questions are fill in and some are drawing and showing parts of the circle. The learning exercise ends with a problem solving question.
5th - 8th Math
What is the Formula for the Area of a Circle?
Cut up a circle and make a parallelogram! What? No way! Yes way! Watch the instructor illustrate just how to cut up the circle and get that parallelogram to then get the formula for the area of a circle. It really works! Base, circumference, height, radius, pi, put these all together to find the formula of the area of a circle.
6 mins 6th - 10th Math
What is Circumference?
There are actually two formulas to find the circumference of a circle. One formula is based on knowing the diameter of the circle, and the other is based on knowing the radius of the circle. The instructor illustrates both formulas. She plugs in the known values and solves each equation to show how they come up with the same solution.
4 mins 4th - 8th Math
How Do You Find the Slant Height of a Cone?
Use the Pythagorean theorem formula to find the slant height of a cone. If the height of the cone and the radius of the base are given, using the Pythagorean theorem formula will be a piece of cake. Just plug in the values given and solve.
5 mins 9th - 10th Math
How Do You Find the Surface Area of a Sphere?
What do a basketball, a bowling ball, and a ping pong ball all have in common? They are spheres. So how do you measure the surface area of a sphere? Yes, there is a formula and all you have to do is know one measurement of the sphere to calculate the surface area.
3 mins 6th - 12th Math
Trends in the Periodic Table
For this trends in the periodic table worksheet, students plot the ionization energy vs. atomic number and they plot atomic radius vs. atomic number of the first 20 elements. Students analyze their graphs and answer questions about the trends in the periodic table of these elements.
9th - 12th Science
What do Atoms Look Like?
In this atom worksheet, students complete 60 questions about the trends in atoms such as ionization energy and atomic radius, about valence electrons, about the families of elements, about metals, non-metals and semi-metals, about the size of atoms and about the atomic structure of atoms.
9th - 12th Science
Equations of a Circle
For this guided activity pupils use rulers, compasses, and graph paper, or Geometer's Sketchpad, to derive the equation of a circle. As they apply the Pythagorean theorem, learners discover how the coordinates of the center and the radius of a circle are used to write the circle's equation.
8th - 11th All CCSS: Designed
Radius, Diameter, and Circumference of a Circle
Tenth graders investigate circle relationships. In this geometry lesson, 10th graders explore the relationship between the radius and the diameter and between the circumference and the diameter. The dynamic nature of Cabri allows students to form and verify conjectures.
Year 5 Unit 2b
This slide-show is packed with information relating to a variety of mathematical concepts. Intended as an accompaniment to a full unit, this resource provides definitions, explanations, and opportunities for learners to practice their 9's and 7's times tables, finding the degree of given angles, and defining polygons based on their angles.
4th - 5th Math