Rob Cantle

For some problems, it does a good job of calculations and video explanation. However, for some, the drawings are not correct, and it left out a part of the calculation in the video (although it does calculate correctly at least). This would be confusing. An example was where I asked it to calculate the area of a circle inside of a right-angle triangle. It drew the circle outside of the triangle, and then in the calculation, it did not have the square root of a^2 b^2 to find c, but at least did that. If the tool is to be effective, it needs to be clear and accurate in order to not create further misconceptions.