How do you fit a tape measure around the Earth? No need if you know a little geometry! Pupils begin by extending their understanding of the Side Splitter Theorem to a transversal cut by parallel lines. Once they identify the...

Lead the class in a Greek history lesson plan with a geometric twist. Pupils relate a short video about geometric properties to modern-day methods of solving for unknown angles. They discuss parallel line theorems and...

Does the space shuttle have an odometer? Maybe, but all that is needed to determine the distance to the moon is a little geometry! The lesson asks scholars to sketch the relationship of the Earth and moon using shadows of an eclipse....

Create Venn diagrams. Your class will discover the relationships between even and prime numbers. Next, they will compare that to the relationship between odd and composite numbers.

Students explore the tools used by Columbus to chart his latitude. They study the change of a location over time.

Students familiarize themselves, through teacher demonstration, with Gavendish's apparatus first used for experimentally determining the value of the Universal Gravitational Constant G, and calculate theoretical value of Earth's...

Learners investigate prime and composite numbers. They use a number chart and cross out multiples of 2,3,5 etc. up to 100. Pupils fold pieces of masking tape around pennies and label them with composite numbers, then fold masking tape...

Prime numbers are the focus of this math worksheet. Students follow directions to identify prime numbers on a hundreds chart. Students follow clear directions in order to find a total of 25 prime numbers on the chart.

High schoolers use principles of geometry to measure the circumference of the Earth. In this applied geometry lesson, students use mathematics to determine scientific information. They make measurements, calculate the central angle,...

In this quotation activity, students use quotation marks as a form of punctuation. Students complete 22 short answer questions filling in the correct punctuation wherever necessary and completing 4 multiple choice questions choosing that...

Students engage in a historical review, starting with the existence of the horizon at sea, proceeding to various studies of the Earth's size and shape, and leading to the attempt by Columbus to reach India by sailing westward.

Sixth graders identify prime and composite numbers and complete an activity problem. Given a 100 chart, they follow directions to create a prime number chart. In groups, 6th graders play a "Prime Take Away" activity to reinforce prime...

Seventh graders determine if a number is prime or composite.  In this determining if a number is prime or composite activity, 7th graders use a website to help find all prime numbers between 1 and 100.  Students use a website...

Fifth graders discover the connections between algebra and geometry. With a focus on arrays and factors, they are introduced to multiplication. They develop an array for multiples of 2 through 10 and identify the factors of each row....

Students measure using tools they have made. In this algebra lesson, students measure the height and distance using non-traditional measuring methods. They apply their findings to algebra and trigonometry properties of measurements.

Students study the earth in relation to the solar system.  In this planetary instructional activity students complete several investigations into the measurement of the earth and its magnetic field.

Young scholars use their geometry and trigonometry skills to determine the distance between their school and another school.

Site gives an explanation of the Sieve of Eratosthenes, a table for prime numbers.

Take a quick guide through the life and achievements of famous Greek mathematician Eratosthenes.

Gives details of the accomplishments of Eratosthenes in the field of mathematics.

A profile of the ancient Greek mathematician, geographer, and astronomer, Eratosthenes. Looks at his many accomplishments, including measuring the circumference of the Earth and the distance to the Moon and the Sun. Includes links to...

A biography article of Eratosthenes of Cyrene.

A discussion of Eratosthenes' development of the system of prime numbers. Includes a Java program that demonstrates the sieve.