Instruct: Classify Amazon reviews into positive or negative sentiment
Query: great toy

Both of my sons love this but only my older son learn from this. My younger son was too little (only 2 1/2 year) to get anything out of this toy. So the child has to be at least 4 to 5 to learn from this toy. The writing area is very fragile so be careful with that or the pigment will not show up once it's destroy.