PBS
Real-Life Math | Chef
Cook up a lesson on unit conversions. Scholars brainstorm how chefs use math in restaurants, and then watch a video of a real chef explaining how unit conversions, food and supply costs, portion sizes, and payroll all require math. They...
Scholastic
Study Jams! Double-Digit Division
RJ had an awesome basketball season this year! Use division by double-digit numbers to calculate his scoring average in this instructional presentation. Starting with an explanation of the terms dividend, divisor,...
Scholastic
Study Jams! Divisibility Rules
Learning division is a challenge for many young mathematicians, but this presentation on divisibility rules can make it much easier. Seven different rules are clearly explained and modeled with the support of multiple examples. Consider...
Scholastic
Study Jams! Single-Digit Division
Learning the algorithm for long division is no easy task, but this resource helps to break the process into manageable steps. Beginning with an explanation of basic division vocabulary, this presentation goes on to model long division...
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Level 4 Subtraction
This video teaches subtraction of up to five-digit numbers using borrowing or regrouping. Practice problems are available. [8:47]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Subtraction 3: Borrowing or Regrouping
A video covering a review of subtraction using a number line, followed by subtraction of numbers up to three-digits by using borrowing and regrouping. Practice problems available. [18:26]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Multiplying Whole Numbers
Two-digit by two-digit multiplication demonstrated through example in this short video. Practice problems are available. [3:18]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Introduction to Order of Operations
This video introduces the concept of order of operations with several examples. Practice problems are available. [9:40]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Order of Operations
This video demonstrates the order of operations in a numerical expression. Practice problems are available. [9:40]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Multiplication 6: Multiple Digit
Learn how to multiply multi-digit numbers by watching a video showing several examples. Practice problems are available. [10:27]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: More Complicated Order of Operations
This video explores more advanced order of operations problems in numerical expressions. Practice problems are available. [9:40]
Khan Academy
Khan Academy: Algebra: Absolute Value 1
A step-by-step demonstration on how to list absolute value quantities from smallest to largest on a number line. Practice problems available. [3:22]
Other
G'day Math: Exploding Dots: Lesson 5.6 the Traditional Algorithm
In this video, the instructor demonstrates how his "Exploding Dots" method of division reflects the standard algorithm of long division. He presents side-by-side examples of 276 divided by 12 using the two methods and explains how they...
Math TV
Math tv.com: Basic Mathematics: Decimals: Multiplication
Videos feature math students providing step-by-step solutions to problems involving decimal multiplication. In the left hand menu, click on Basic Mathematics, Decimals, Multiplication.
Math TV
Math tv.com: Basic Mathematics: Decimals: Division
Students provide step-by-step solutions to division problems involving decimals. In the left hand menu, click on Basic Mathematics, Decimals, Division.
Math Mammoth
Math Mammoth: Drawing Geometric Shapes With Given Conditions
This video demonstrates how to draw different polygons given a set of conditions. [7:47]
Math Mammoth
Math Mammoth: Drawing Triangles With Given Conditions
This video presents a number of problems where students would be asked to draw triangles that meet the given criteria. [8:48]
Math Mammoth
Math Mammoth: Add and Subtract Decimals Mentally (With Up to 3 Decimal Digits)
A lesson in how to add and subtract decimals to the thousandths place using mental math. [10:40]
Khan Academy
Khan Academy: Computational Number Theory: Algorithmic Efficiency
How can we improve the speed of a (deterministic) primality test?
Khan Academy
Khan Academy: Subtraction With Borrowing (Regrouping): Level 4 Subtraction
This video demonstrate subtraction of up to five-digit numbers using regrouping.
Khan Academy
Khan Academy: Subtraction: Introduction to Borrowing or Regrouping
A video covering a review of subtraction using a number line, followed by subtraction of numbers up to three-digits by using borrowing and regrouping.
Khan Academy
Khan Academy: Worked Example: Long Division With Remainders: 2292 / 4
Demonstrates how to solve division of a multi-digit number by a 1-digit number using long division when there is a remainder. [10:07]
Khan Academy
Khan Academy: Multiplying Challenging Decimals
Demonstrates how to multiply decimals to the thousandths place using the example of 1.21 x 0.043. [4:25]
Khan Academy
Khan Academy: Long Division With Decimals
Demonstrates long division with decimals using the example of 6.7 divided by 2.211. [4:10]