Curated OER
Rounding up or Rounding down
Teach the class how to estimate by rounding to the nearest 10. They review the rules for rounding, try rounding a few numbers using a number line, then round on their own. This is a good introduction that explains how to round and why we...
Curated OER
ONES and TENS
Before you can teach place value or regroup, you need to provide students with a concrete idea of the definition of ones and tens. Here, ones and tens are defined and then shown several different ways in order to represent several...
Curated OER
Decimals - Tenths and Hundredths
One of the better presentations on teaching decimals is here for you. In it, learners practice identifying tenths and hundredths by looking at grids of 100 squares that have been shaded. Number lines are also used to give pupils a...
Curated OER
Doubles and Halves 3
Build mental math skills by teaching learners to double and half three-digit numbers. They start out by doubling one of seven double-digit numbers. Next, they discuss their strategy, and then practice doubling and halving 3-digit...
Curated OER
Addition Using Partitioning
Learners discover an alternative way to add numbers called partitioning. It's a way of breaking down numbers into their place values before adding them. This would be a good way of reinforcing place value when teaching addition to your...
BW Walch
Creating and Graphing Linear Equations in Two Variables
This detailed presentation starts with a review of using key components to graph a line. It then quickly moves into new territory of taking these important parts and teasing them out of a word problem. Special care is...