Posts by JDM Educational Staff

Data, data, data. Our world is filled with data!!! Browse through news sites and you’ll likely find charts, graphs, pictograms etc. describing all kinds of phenomena in our world that’s filled...

In trigonometry, you will sometimes see common input angles (such as 45 or 90 degrees) for the cosine function.  It helps to know the corresponding outputs for these angles to help you do...

In trigonometry, we often use common input angles (such as 30 or 60 degrees) for the sine function.  It helps to know the corresponding outputs for these common angles to increase your...

In geometry, you will often compare triangles to see if their side lengths or angles are the same.  Congruent triangles are exactly the same in terms of side lengths and angles – but what...

At an early age, you probably learned about the mean, median, and mode - favorite topics among standardized tests! Perhaps in high school you also learned about standard deviation and...

Perhaps you remember problems like the following from standardized tests: Find the next two numbers in the given sequences: {3, 7, 11, 15, ___ , ____ }{1, 5, 25, 125, ___ , ____ } Do these...