Science Museum Solar Robot

We will be returning this to Amazon. It was fun to build with my son, we followed the instructions to the letter, no screws were over-tightened and it was very disappointing when it didn't work.We held it close to a light bulb for one minute, and nothing. We left it in a beam of sunlight, and nothing. Either the motor is locked, the solar pad does not work, or the wires are badly soldered - I have not taken it apart to find out, because we just want a refund.Other things to note:* The dinosaur head and tail is cut out from the box (with perforations) and made of cardboard.* It says it is suitable for age 8+, but the screw holes are unthreaded and my son could not put them in, it requires an adult's power and technique.* No screw driver is supplied, and you need a smaller than average Phillips (cross) headed screw driver.All of the above would not have mattered if it had worked! I have deliberately marked all categories with 1 star because I don't want the overall average number of stars to be greater than 1. I would have given the 'educational value' category 3 stars.