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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: 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: Practice Estimating: Lesson 4
This lesson should provide examples of how to make good estimations. It is 4 of 4 in the series titled "Practice Estimating."
Sophia Learning
Sophia: Identifying Certain and Uncertain Digits
A brief overview of the use of certain and uncertain digits in measurement.
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: Order of Magnitude
A short introduction to the concept of order-of-magnitude, with an explanation of how it is used to make estimations 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.
Sophia Learning
Sophia: Adding With Significant Figures
A brief presentation helping the learner understand how many significant figures to use when adding numbers.
Curated OER
Science Kids: Science Images: Utahraptor
This drawing shows the possible appearance of Utahraptor, a dinosaur from the early Cretaceous Period (around 124 million years ago). The Utahraptor is a Theropod from a family of dinosaurs called Dromaeosauridae (more commonly known as...
Sophia Learning
Sophia: Subtracting W/ Significant Figures: Lesson 2
This lesson should help a learner understand how to determine the appropriate amount of significant figures when subtracting numbers. It is 2 of 4 in the series titled "Subtracting w/ Significant Figures."