I have a major problem with spatial awareness and would probably have a better Maths grade and IQ if I didn't. So when a teacher allowed a student to take the silicon dioxide model apart I wasn't pleased. Got the picture and have tried several times to put back together then got bored, tried to get my grandkids to do it but they wouldn't.
This model has now been ordered by several Chemistry teachers non of whom have noticed the model is not quite correct.
This model has now been ordered by several Chemistry teachers non of whom have noticed the model is not quite correct.