This is an AWESOME animated demonstration of surface are vs. volume. It would be a great way to start a lesson on this SLE.
Choose Proper Fractions (Easy) for this skill. The hard version would be a great extension. Both go beyond the benchmark fractions.
Use your knowledge of points on a plane to guide a robot through a minefield. This site uses all four quadrants.
This site also allows you to practice finding elapsed time.
Mr. Myers Classroom
This interactive clock is great to use as a teaching tool or for a well organized center. One of the 3rd grade SLEs for this quarter, elapsed time, end time unknown, is not covered in Saxon but can be taught using this manipulative.
Hotmath (Hans Software)
This is a coordinate plane challenge that involves all four coordinates. Enter coordinates on a plane to catch flies. Yuck, but fun!
Click on Proper Fractions (easy) for an activity that requires quick solving of multiplication of fractions times whole numbers to ten. Note that your SLE states that students must be able to MODEL multiplication of fractions, so be sure that you also provide them with experience with this.
Mrs. Glossar's Math Goodies
Learn the vocabulary and basics of diameter, radius, chord, plane, etc. Great descriptions and practice.
This site allows kids to explore decimals on a number line, which makes it really easy to show how to round up or down.
A great site for helping kids understand what it actually means to show 1/2 OF 1/3.
This site lets kids work problems conceptually by using models. Scroll to the bottom for the part to part ratio exercises.
This blackline would be a great resource for Battleship games.
This is an awesome site that allows kids to build rectangular prisms and explore both volume and surface area.
This is an awesome site for teaching kids about volume. Be sure to give them blocks so they can build as you teach!
This is a great site for modeling perfect squares and other numbers by using arrays. It shows the equations so kids can see that a perfect square only has one while other arrays have two (commutative property).