This short video and interactive assessment activity is designed to teach second graders about multiplying by 8.
This short video and interactive assessment activity is designed to teach second graders about multiplying by 9.
This short video and interactive assessment activity is designed to teach third graders about number riddles (numbers up to 100,000).
This short video and interactive assessment activity is designed to teach fourth graders about one-step conversions between multiples of 10.
This short video and interactive assessment activity is designed to teach third graders about one-step conversions involving multiples of ten.
This short video and interactive assessment activity is designed to teach fourth graders about one-step subtraction conversions with compound units (metric units) - word problems.
Tag Line: Challenging math problems worth solving
A collection of math problems that require some good thinking, and maybe a few attempts. The idea is to move beyond procedural understanding.
The collections are sorted from grades Kinder to High School (for common core standards in the US - but probably transfer well). The problems usually involve some blank spots which must be filled with numbers. In many of the problems you can not use a digit more than once.
Like similar sites that provide these problem style questions, you can submit your own to add to the collection.
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This short video and interactive assessment activity is designed to teach fourth graders about which compound unit is longest? (english units).
This short video and interactive assessment activity is designed to teach fourth graders about which compound unit is shortest? (english units).
This short video and interactive assessment activity is designed to teach fourth graders about arranging numbers in specific orders.
This short video and interactive assessment activity is designed to teach second graders about comparing coins with pictures.
This short video and interactive assessment activity is designed to teach second graders an overview of addition (sums to 100) - word problems.
This short video and interactive assessment activity is designed to give fourth graders an overview of comparison of capacity (gallons, pints, and quarts).
This short video and interactive assessment activity is designed to give fourth graders an overview of conversion among units of measure for capacity (english units).
This short video and interactive assessment activity is designed to give fourth graders an overview of ellipses, trapezoids, rhombi, and polygons.
This short video and interactive assessment activity is designed to give fourth graders an overview of - hundredths.
This short video and interactive assessment activity is designed to teach first graders an overview of subtraction (numbers to 100).
This video lecture serves as a review of subtraction up to the number twenty for first graders.