Knex 78890 amusement park experience set
K nex amusement park experience k nex 78890 this educational amusement park experience from k nex will help to illustrate how energy acceleration and speed work in popular thrill rides students can assemble and operate a motorised roller coaster swing ride boom ride ferris wheel scrambler ride and carousel from the 2235 pieces and additional supplies included in this kit k nex 78890 amusement park experience set