The Lattice Multiplication Algorithm

Aside from the standard multiplication algorithm we know, and the Line Multiplication which I already discussed, there is another method that we can use to multiply. This is called lattice multiplication. We can do this in multiplying 2-digit by 2-digit numbers but it can be expanded to numbers with higher number of digits. The steps of are as follows.

Step 1: Create 2 by 2 grid and place the numbers you want to multiply at the top and at the right side as shown below. In this case, we want to multiply 83 by 42.

lattice multiplication

Step 2: Draw diagonals in each grid. This forms two triangles. These triangles will contain the digits of the product. As shown below, the yellow square will contain the product of 3 and 2.  Continue reading

2015 1st Half in Review – Multimedia Resources

In the previous post, we have reviewed some posts in Math and Multimedia that discusses mathematics content. In this post, let us review some of the multimedia resources that had been posted in the first half of this year. This includes resources software, hardware, and videos. These multimedia resources can be used for teaching and learning mathematics.

2015 Year in Review – 1st Half

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2015 1st Half in Review – Mathematics

Time flies indeed! Half of the year is over.

If you have observed,  I have refrained from posting reviews every month. This is due to the fact that I am only posting 4-5 posts every month. The first half of the year have been so busy and I think the next half will even be busier.

Anyway, here are the mathematics content posts for the first half of the year. Enjoy!

1st Half in Review – Mathematics

1.) How to Use the Factorial Notation
2.) How to Use the Factorial Notation
3.) What exactly is the vertical line test?
4.) Why the Area of a Rhombus is Half the Product of its Diagonals
5.) Understanding the Concept of Inverse Functions
6.) Why the Multiplication by 11 Trick Works
7.) The difference between AND and OR
8.) Introduction to Negation and the NOT Operator
9.) Understanding the Basics of the De Morgan’s Laws
10.) Understanding If-Then Statements
11.) 4 Interesting Things about the Japanese Counting Systems
12.) On Equations of Intersecting, Coinciding, and Parallel Lines
13.) How to Represent Inequalities in One Variable
14.) A Closer Look at Coinciding Lines

Explore Math and Multimedia  Continue reading

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