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PBS
Pbs Kids Afterschool Adventure!: Operation: Shape Hunt Activity Plan
Calling all Shape Detectives! For this weeklong adventure, the children will explore and search for basic shapes as they go on a shape hunt. They will describe, match, sort and compose a variety of two-dimensional shapes, and create a...
Other
Quick Math: Scientific Notation
In this section, we will introduce another symbol for a fraction of the form and then we will use this symbol to write certain numbers in simpler form.
Khan Academy
Khan Academy: Model With Function Combination
Given two basic functions that model a real-world situation, combine them using the appropriate arithmetic operation in order to model a more complex situation. Students receive immediate feedback and have the opportunity to try...
Fundación Cientec
Cientec: Juegos Cooperativos
A small collection of 20 or so math brain teasers and word problems, in Spanish. Challenging for younger students -- they use math skills up to multiplication.