Estimating Games

Go HERE to play some games using estimating : o )

Why we need fractions

Fractions

Puzzle

Go HERE to solve a puzzle using a goat, cabbage, and a wolf : o )

Estimation Game

Go HERE to play a game using estimation!

Exploding Math Art

Go HERE to create some exploding math art!

Really big numbers

Go HERE to learn how to say REALLY BIG NUMBERS!

Rounding Games

Go HERE to practice rounding to the nearest 10!

Go HERE to play Half Court Rounding : o )

Telling Time Games

Go here to play a game by telling time!

Go HERE to play a game telling time to the minute!

Money games

Go HERE to play a game making equivalent sets of money!

Go HERE to show off your skills with counting and comparing groups of coins.

Go HERE to practice counting coins!

Go HERE to go on a spending spree!

Go HERE to work with counting change.

Estimating Greeting Card Sales: PBS LearningMedia

: PBS LearningMedia

In this Cyberchase video segment, Harry responds to a "Get Rich Quick" ad and finds himself selling Cheesy Greeting Cards. Unfortunately, he has trouble selling all of the cards to friends and relatives, so he sets up a stand on the sidewalk. When he uses a calculator to find the total amount of money he has collected, he is happy to learn it is over $250. But when he looks at the stack of unsold cards, he questions his calculation. He decides to check his total using estimation, and he soon realizes he had made an error on his calculator.

Estimation : PBS LearningMedia

Estimation : PBS LearningMedia

In this video segment from Cyberchase, Inez is baking 50 cookies for her class and each cookie has to have four jelly beans on top. Inez has a jar full of jelly beans. She knows she needs at least 200 jelly beans, but rather than count all of the jellybeans, she decides to estimate to see if she has enough.

Be Reasonable: PBS LearningMedia

: PBS LearningMedia

In this video segment, the CyberSquad discovers how deductive reasoning can be used to find the answer to a question.

Arrays with Rikki Rectangle: PBS LearningMedia

: PBS LearningMedia

Demonstrate the process of multiplication as repeatedly adding the same number, counting by multiples, combining equal sets, and making arrays. Solve word problems using grade level appropriate operations and numbers.

Place Value: PBS LearningMedia

: PBS LearningMedia


Go here to help Spider count to 777 using place value!

Using graphs to make estimations: PBS LearningMedia

: PBS LearningMedia

Go here to play a game using graphs to make estimations!

Using Estimation Game: PBS LearningMedia

: PBS LearningMedia

Go here to play a game using your estimation skills!

Funbrain Money game

Go HERE to Funbrain to play a fun money game :o )

and HERE to read some fun facts about money!

Intersecting Lines

Intersecting lines definition:  The point at which two lines (or curves) touch, even if the lines/curves do not cross each other, is called their intersection. The lines (or curves) are said to intersect at that point. So, the corner of a rectangle is a point of intersection of two of the sides. Intersecting lines are lines that share a point in common (or, less commonly described as "intersecting," coincide entirely).


What's in a word?  inter- (between or among, mutually or together) + -sect (cut) = "mutually cutting"; two roads "cut" (across) each other at their intersection.

Rows and Columns in an Array

Columns run vertically, like the columns of a building. In these pictures the first and third columns are indicated by a red loop.

Rows run horizontally. The fourth and second rows are looped in these pictures.

These are all rectangles: 

Arrays are always in a rectangular shape.