Science Kits...

 I've been a fan of Exploration Education Science kits for 5 years.   This year the Architect is doing the advanced physical science curriculum.  It took over two weeks to build this glider so that he could experiment with it but it was well worth the effort.   It's sturdy and even survived a couple nights of pouring rain stuck on the roof of our shed. 

He's had a great time flying it over and over again.