Blocks Rock! A STEM Toy and Educational Game for Competitive Structured Block Play, Ages 4+ STEM EDUCATIONAL GAME: Blocks Rock! is competitive structured block play for kids. Players compete to build a wooden block structure. A fun STEM game for boys & girls ages 4 years old and up. GROUND-BREAKING STUDY: Scientifically proven with MRI brain scans to improve spatial thinking & mental rotation in a 2016 research study by Indiana University's School of Psychology & Brain Sciences. TEACHER BENEFITS: Structured play is an opportunity to engage students in small or large groups. A great STEM toy for free time station activity. FAMILY FUN: Unplug and reconnect as a family. A great building block game for kids along with all ages playing together, such as grandparents and grandchildren. A perfect STEM toy for girls and boys who love competitive learning. INCLUDES: 24 solid wood blocks + 2 decks of cards + durable carrying case + a bell 24 solid wood blocks ofdifferent shapes and sizes in 5 different colors Two decks of cards (Levels 1 and 2) A gameplay bell Durable carrying case Fun for the entire family. Triggers brain development. All ages play together such asgrandparents and grandchildren. Independent play, no monitoring. Helps with time management. Playful learning. Suitable for free time stations. Develops critical STEM skills. Portable, no wires or batteries. Researched at a major university.