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Sophia Learning
Sophia: Identifying Certain and Uncertain Digits
A brief overview of the use of certain and uncertain digits in measurement.
Sophia Learning
Sophia: Introduction to Estimating: Lesson 3
This lesson should help a learner understand why estimates are used when making calculations. It is 3 of 4 in the series titled "Introduction to Estimating."
Sophia Learning
Sophia: Estimating the Area of a Circle: Lesson 4
This lesson explains how triangles and parallelograms can be used to estimate the area of a circle. It is 4 of 4 in the series titled "Estimating the Area of a Circle."
Sophia Learning
Sophia: Order of Magnitude
This slide show presentation introduces the concept of order-of-magnitude, and how it is used to estimate large values in physics.
Sophia Learning
Sophia: Significant Figures Addition & Subtraction
A guided lesson explaining how to add and subtract numbers expressing the answer with the appropriate number of significant digits.