--- product_id: 5024519 title: "Pit and Pendulum - For Science Classrooms, Zen Gardens, or Office Desktops - Replacement Sand Only" brand: "educational innovations" price: "€ 46.80" currency: EUR in_stock: true reviews_count: 8 category: "Educational Innovations" url: https://www.desertcart.hr/products/5024519-pit-and-pendulum-for-science-classrooms-zen-gardens-or-office store_origin: HR region: Croatia --- # 21-inch tall mesmerizing pendulum Fine replacement sand for crisp pattern tracing Visualizes harmonic motion & Lissajous patterns Pit and Pendulum - For Science Classrooms, Zen Gardens, or Office Desktops - Replacement Sand Only **Brand:** educational innovations **Price:** € 46.80 **Availability:** ✅ In Stock ## Summary > ⚛️ Swing into science with style and precision! ## Quick Answers - **What is this?** Pit and Pendulum - For Science Classrooms, Zen Gardens, or Office Desktops - Replacement Sand Only by educational innovations - **How much does it cost?** € 46.80 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/5024519-pit-and-pendulum-for-science-classrooms-zen-gardens-or-office) ## Best For - educational innovations enthusiasts ## Why This Product - Trusted educational innovations brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Premium Replacement Sand:** Maintain flawless, intricate patterns with our finely graded replacement sand designed for optimal flow and clarity. - • **Versatile Educational Tool:** Perfect for science classrooms, zen gardens, or office desktops—blend learning with relaxation effortlessly. - • **Mesmerizing 21-inch Display:** Elevate your desk or classroom with a striking 21-inch pendulum that captivates and educates. - • **Explore Harmonic Motion Live:** Visualize complex physics concepts as the pendulum swings in perpendicular planes creating stunning Lissajous figures. - • **Trusted by Educators & Enthusiasts:** Join thousands who use this iconic physics model to inspire curiosity and spark conversations. ## Overview The Educational Innovations Pit and Pendulum is a 21-inch tall physics model that demonstrates harmonic motion by tracing elegant Lissajous patterns in sand. Ideal for science classrooms, zen gardens, or office desktops, this replacement sand ensures crisp, clear pattern formation, helping users visualize energy transfer between perpendicular pendulum swings. A perfect blend of education and aesthetic appeal for all ages. ## Description This pendulum is mesmerizing to watch as it traces beautiful Lissajous patterns in sand. A favorite of elementary school science tables, it can be used at upper levels to study harmonic motion as energy is transferred from a pendulum swinging in one plane to swinging in another plane at right angles. A Lissajous figure results from the two sine curves meeting at right angles. 21 inches tall! Review: The delivery and shipping went off without a hitch. ... - The delivery and shipping went off without a hitch. The sand becomes lumpy after only a short time. I was able to take a business card and chop up the chunks. This will have to be done on a regular basis. Review: Replacement Sand - I would recommend this product as it does an adequate job, however it is a bit more grainier than the original sand and this somewhat compromises the quality of the designs. ## Features - Replacement sand for the Pit and Pendulum. - Related Items: BAR-125, BK-840, MUG-175, RH-100 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B009P8BACA | | Age Range Description | Adult,Kid | | Best Sellers Rank | #448,181 in Toys & Games ( See Top 100 in Toys & Games ) #3,922 in Educational Science Kits | | Brand Name | Educational Innovations | | Customer Reviews | 3.9 out of 5 stars 85 Reviews | | Educational Objective | Science | | Item Weight | 0.27 g | | Manufacturer | Educational Innovations | | Manufacturer Maximum Age (MONTHS) | 120 | | Manufacturer Part Number | PIT-105 | | Material Type | sand | | Model Number | PIT-105 | | Number of Items | 1 | | Number of Packs | 1 | | Size | 21 inches | | Theme | Physics | ## Images ![Pit and Pendulum - For Science Classrooms, Zen Gardens, or Office Desktops - Replacement Sand Only - Image 1](https://m.media-amazon.com/images/I/41jxyxjWoUL.jpg) ## Questions & Answers **Q: How much does this bag of sand weigh?** A: The bag is about the ize of a quart size zip lock bag and would weigh about two to three pounds. **Q: I only want the sand ?** A: That’s what this is. Only the sand. **Q: I need a replacement part. The piece that the pendulum hooks onto at the top. Does anyone know where to get one?** A: YOU CAN GET ALL REPLACEMENT PARTS AT PENDULUMSWINGSUSA.COM **Q: what is it for or what does it do ?** A: sand is for pit and pendulum I bought years ago. Touch the pendulum and it makes designs in the sand. Very relaxing. ## Customer Reviews ### ⭐⭐⭐⭐⭐ The delivery and shipping went off without a hitch. ... *by S***H on May 27, 2015* The delivery and shipping went off without a hitch. The sand becomes lumpy after only a short time. I was able to take a business card and chop up the chunks. This will have to be done on a regular basis. ### ⭐⭐⭐⭐ Replacement Sand *by R***N on May 9, 2014* I would recommend this product as it does an adequate job, however it is a bit more grainier than the original sand and this somewhat compromises the quality of the designs. ### ⭐⭐⭐⭐⭐ Replacement Sand for Pit and Pendulum *by D***A on April 7, 2014* the Pit and Pendulum requires a specialized sand that is fine enough to easily comply to the 'design' strokes of the pendulum. The sand that I ordered and received, does just that. It's exactly what I wanted. I received my order in a timely manner allowing my grandchildren to delight in the designs 'they' created. ## Frequently Bought Together - Educational Innovations Pit and Pendulum - for Science Classrooms, Zen Gardens, or Office Desktops - Replacement Sand Only - Hygloss Colored Craft Sand, 3-Pound, White - Hasbro Gaming Candy Land Kingdom Of Sweet Adventures Board Game For Kids, Christmas Gifts for Boys & Girls, 3+ (Amazon Exclusive) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/5024519-pit-and-pendulum-for-science-classrooms-zen-gardens-or-office](https://www.desertcart.hr/products/5024519-pit-and-pendulum-for-science-classrooms-zen-gardens-or-office) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-09-01*