A work in progress, this FlexBook is an introduction to theoretical probability and data organization. Students learn about events, conditions, random variables, and graphs and tables that allow them to manage data.

CK-12 Foundation's Basic Probability and Statistics - A Short Course is an introduction to theoretical probability and data organization. Students learn about events, conditions, random variables, and graphs and tables that allow them to manage data.

This Flexbook is community contributed through ck12.org. It covers three lessons on the Pythagorean Theorem. 1) Introduction and Determining if the Triangle is a Right Triangle, 2) Finding the Hypotenuse, and 3) Finding a leg. It includes step by step instructions, application problems, and answers (at the end of each lesson). Ck12.org material is downloadable, editable, and accessible offline and online.

This short video and interactive assessment activity is designed to teach second graders an overview of schedules and timelines.

This short video and interactive assessment activity is designed to teach third graders an overview of schedules and timelines.

This short video and interactive assessment activity is designed to give fourth graders an overview of schedules and timelines.

This short video and interactive assessment activity is designed to teach fourth graders about reading the compound units in pounds and ounces.

This short video and interactive assessment activity is designed to teach second graders about representing numbers in expanded form i.

This short video and interactive assessment activity is designed to teach second graders about representing numbers in expanded form II.

This short video and interactive assessment activity is designed to teach fourth graders about identifyinging the value of digits based on place value.

This short video and interactive assessment activity is designed to teach third graders about identifying the value of digits based on place value.

This short video and interactive assessment activity is designed to teach fourth graders about recognizing place value of digits in numbers ii.

This short video and interactive assessment activity is designed to teach fifth graders about identifying the properties of rectangles.

This short video and interactive assessment activity is designed to teach third graders an overview of squares and rectangles.

This short video and interactive assessment activity is designed to teach fifth graders about reducing simplest form - word problems.

This short video and interactive assessment activity is designed to teach fifth graders about reducing to simplest form.

This short video and interactive assessment activity is designed to give fifth graders an overview of reflective symmetry.

This short video and interactive assessment activity is designed to teach fifth graders about multiplication patterns over increasing place values.

This short video and interactive assessment activity is designed to teach fourth graders about patterns without using multiplication.

This short video and interactive assessment activity is designed to teach fourth graders about express the sentence and calculate - division.