GULYMNA - Christmas Advent Calendar, 24 Pieces, Stem, Countdown Advent Calendar, Educational Science Kit, Construction Toys, Surprise for Boys and Girls

24 IN 1 STEM SETS - 24 sets (24 bags) of independent scientific assembly projects, including solar powered booths, solar powered helicopters, cable cars, steamboats, crank generators, colorful fiber optic lights, balance robots, electric gliders, solar powered double rings, wonderful windows, all-wheel drive electric vehicles, and more interesting projects waiting for you to explore ando STEM LEARNING & EDUCATION - DIY STEM experiments involve science, technology, engineering, art, and math. It can be used as an auxiliary teaching tool to develop children's intelligence, cultivate their hands-on ability, and improve parent-child relationship. Favorable for developing children's creativity and logical thinking ability, and improving children's hand-eye coordination EASY TO ASSEMBLE Take out the puzzle pieces on the board and assemble them referring to the instructions (each item comes with individual instructions that don't spoil the mystery) and fasten them with screws, thereby completing your own miniature model building toys! All items in the educational science kit are clearly marked and labeled, making them the perfect rewards for kids 8 years old and up High Quality Materials The Christmas advent calendar is made of plastic and composite wood boards, easy to assemble. The smooth surface and rounded corners design make your kids safer when assembling these 3D wooden puzzle toys. These wooden building toys can also be colored to create unique crafts and can be used as decoration in the house or as a gift for friends Exquisite Christmas countdown: the exquisite Christmas countdown calendar box contains 24 bags of science projects, the bags are labeled with dates from 1 to 24 days, let children open them by serial number and enjoy the challenge of creating an unforgettable Christmas countdown experience.This 2024 Christmas advent calendar is an ideal Christmas gift for kids, girls, boys, adults and more