Many Renaissance artists and architects used the concept of the golden mean which was thought to be visually pleasing. An Italian mathematician developed a series of numbers related to the golden mean; see if you can detect the pattern.
Click through each representation to see how the display of relative frequency relates to the display of cumulative frequency and their corresponding histograms. Examine how each method is useful for summarizing the variation in numeric data.
Test your knowledge of atoms, orbitals, periods/groups, characteristics of families, isotopes and relative mass. Take this 39-question test, review your correct and incorrect answers, and print out your assessment.
This interactive focuses on the concept of Chronological Thinking. Using the example of Pocahontas, explore how historical representations change over time, and often reflect the period in which the representation was created.
Consider a week in your classroom, record instances when your students are writing and find additional places to fit writing into your teaching. See a sample of one weekly schedule where writing has been incorporated across the curriculum.
Compare the effects of relative and absolute changes on a picture. Watch what happens to a Quadperson (a drawing of a face made of quadrilaterals) if every line were made half as long or made a half-inch shorter.
Plot out a three-dimensional structure based on two-dimensional silhouettes. Look at the front and side view of figures and use a table to plot out the dimensions that mathematically represent the figures.