https://www.tenmarks.com/loginOur middle school principal emailed parents about the TenMarks Summer Math Program. TenMarks was acquired by Amazon in 2013. Its site says its curriculum "has the depth and rigor of the new CCSS and state standards". At least for the summer it is free. Once a parent has created an account she can create an account for each of her children. You are asked to specify the grade your child has completed, and the program will start by assessing knowledge of math at that grade level. There is no verification of grade level, so your child could start with the math of a higher grade. My 8yo used it for about 40 minutes yesterday and wanted to do more today. I'll have the other two children try it too.
