This is great for practicing subtraction with manipulatives and numbers. Teachers should model first and encourage borrowing from the tens before removing ones. This matches the program conceptually to the standard algorithm (crossing out the ten and showing the movement of ten ones to the ones place).
These games are addictive! Solve the problems before the piles get too high.
Once you understand what the facts mean, practice all facts. You can print a worksheet for extra practice.
This site has links to dozens of other sites that kids can use to practice basic facts once they have a solid conceptual understanding of multiplication.
Practice repeating patterns by selecting what comes next.
Mr. King's Online Classroom
This site has a variety of online algebra links which will help with comprehension of the skills in Unit 2.
This video gives some great examples of growing and repeating patterns in quilts. Stop it to explore patterns, or play it during transitions.
This is an excellent site for grades k-5. It has lessons that take kids from beginning repeating patterns, moves them into growing patterns, and then into rules.
Great near Halloween! Set values for +, -, X, or /. Use to skip count, count forward or backward by one, for divisibility, writing equations, function tables, etc.
Select the operation, & drag numbers to work the problem. It's like working them with pencil and paper, but it's self checking. The only disadvantage is that when you miss one, the problem goes away, so there's no reflection time.