Category: 3rd Grade

Multiplication Tables

If you haven’t memorized your multiplication table yet, I am going to show you how to you need to memorize only three of the 400 numbers on a 20 times table in order to know your table. Download the student…

Sprouts Math Game

This is a really neat game invented in 1967 by two mathematicians that was soon after published in Scientific American, where it caught fire with people all over the world. It’s a very simple game with a lot of interesting…

Finger Multiplication

Having trouble with your 6, 7, 8, and 9 multiplication tables? Sneak a peek at this nifty trick for multiplying single digits together. All you need is a set of hands and about ten minutes, and you’ll be a whiz…

What Day Were You Born On?

This is not only a neat trick but a very practical skill – you can figure out the day of the week of anyone’s birthday. If you were born in the 20th Century, (1900-1999), we can use math to find…

Paperclip Trick

For this puzzle, you’ll use three cups and eleven objects. The first challenge is to put an odd number of objects in each cup. Is this pretty simple? How many different combinations can you come up with for the eleven…

Dictionary

If a friend had chose a three-letter word and asked you to guess it, how would you start? It seems like it might take a while to narrow it down, right? This is a neat word guessing game that uses…

Tic Tac Toe

The first folks to play this game lived in the Roman Empire, but it was called Terni Lapilli and instead of having any number of pieces (X or O), each player only had three, so they had to move them…

Factorials

If I said “3!“, would you think the 3 is really excited, or that you have to shout the number? In fact, it’s a mathematical operation called factorials, and boy are they fun! They may seem complicated at first, but…

Multiplying 2-Digit Numbers by 11

Here’s our first MATH lesson. It is so easy that one night, I wound up showing it to everyone in the pizza restaurant. Well, everyone who would listen, anyway. We were scribbling down the answers right on the pizza boxes…

Multiplying 3-Digit Numbers by 11

If you can multiply 11 by any 2-digit number, then you can easily do any three digit number. There’s just an extra step, and make sure you always start adding near the ones so you can see where to carry…