Make your own mass accelerating launch balls and discover the science of elastic collisions. Create almost impossible bouncing ball tricks and much more! Mix and mold a supercharged 'planet collision' accelerator which fires a small 'moon' into orbit. Kit includes 4 graduated size moulds and over 6 activities.
ترست بايلوت
منذ أسبوعين
منذ 4 أيام
