As described by most reviewers – Hands-On Equations 1 Review

The only issue I have is the icon that attaches to each user name; it looks like man in a tie. Please come up with some generic icon. Please. I can use the current 'male' icon as a lesson to inspire students who do not wear ties to love math despite their lack of ties :) On a personal level, the icon makes me sad even though this app would have helped me tremendously when I was in primary/secondary schools. I am in my 50s and was a girl who loved math even though I couldn't grasp it the way it was taught to me from k-12 (I was told math wasn't for me and that I should learn to type instead). I fought hard for my math skills and in college I did well in trig and calculus; by then (mid1980s), there were male instructors who were encouraging to all students wanting to learn maths. Please, change the icon :)
Review by SidCid on Hands-On Equations 1.