Instructional Video
Study Pug

Study Pug: Understanding the Number Systems

9th - 10th Standards
Numbers can be categorized more specifically into different number systems, for instances, natural numbers, whole numbers, integers, rational numbers, and irrational numbers. In this video, you will learn how to classify numbers into...
Instructional Video
Khan Academy

Khan Academy: Metaphysics: Sizes of Infinity, Part 1 (Hilbert's Hotel)

10th - 12th
Part 1 of a pair. Agustin teaches us about some weird properties of infinity, using an example due to mathematician David Hilbert called 'Hilbert's Hotel'. He shows us a result proved by another mathematician, Georg Cantor: that many...
Instructional Video
Sophia Learning

Sophia: Whole Numbers: Lesson 2

7th - 8th
This lesson goes over whole numbers, or natural numbers that are not fractions/decimals. It is 2 of 10 in the series titled "Whole Numbers."
Instructional Video
Sophia Learning

Sophia: Whole Numbers: Lesson 4

7th - 8th
This lesson goes over whole numbers, or natural numbers that are not fractions/decimals. It is 4 of 10 in the series titled "Whole Numbers."