---
product_id: 440218910
title: "UGEARS STEM Arithmetic Kit 2 in1 Model Kit - Creative 3D Wooden Puzzles for Adults, Teens and Children - DIY Mechanical Science Kit for Self Assembly - Educational and Engineering 3D Puzzles with App"
brand: "ugears"
price: "14420CFA"
currency: XOF
in_stock: true
reviews_count: 5
url: https://www.desertcart.sn/products/440218910-ugears-stem-arithmetic-kit-2-in1-model-kit-creative-3d
store_origin: SN
region: Senegal
---

# Dual-function Addiator & Multiplier STEM learning + spatial skills 117 precision wooden pieces UGEARS STEM Arithmetic Kit 2 in1 Model Kit - Creative 3D Wooden Puzzles for Adults, Teens and Children - DIY Mechanical Science Kit for Self Assembly - Educational and Engineering 3D Puzzles with App

**Brand:** ugears
**Price:** 14420CFA
**Availability:** ✅ In Stock

## Summary

> 🛠️ Unlock the magic of math with every gear turn!

## Quick Answers

- **What is this?** UGEARS STEM Arithmetic Kit 2 in1 Model Kit - Creative 3D Wooden Puzzles for Adults, Teens and Children - DIY Mechanical Science Kit for Self Assembly - Educational and Engineering 3D Puzzles with App by ugears
- **How much does it cost?** 14420CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/440218910-ugears-stem-arithmetic-kit-2-in1-model-kit-creative-3d)

## Best For

- ugears enthusiasts

## Why This Product

- Trusted ugears brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-Inclusive Kit:** Everything you need to build, learn, and impress—perfect for solo focus or bonding with family and friends.
- • **Gift-Worthy Genius:** A standout present for curious minds and hobbyists craving a blend of engineering and play.
- • **Dual Arithmetic Power:** Add, subtract, multiply, and square numbers from 0 to 12 with intuitive sliding gears.
- • **Hands-On STEM Mastery:** Build and operate a mechanical addiator and multiplier to make math tactile and fun.
- • **Fast & Friendly Assembly:** 117 pre-cut wooden pieces snap together quickly—no batteries, no fuss, just pure creative flow.

## Overview

The UGEARS STEM Arithmetic Kit 2 in1 is a sophisticated yet accessible 3D wooden puzzle set featuring 117 precision-cut pieces that assemble into a mechanical addiator and multiplier. Designed for ages 8+, it offers hands-on STEM education by enabling users to perform arithmetic operations through engaging gear mechanisms—no batteries required. This all-in-one kit fosters spatial awareness, problem-solving, and mechanical intuition, making it an ideal gift for learners and hobbyists eager to blend creativity with engineering.

## Description

Product Description UGEARS Arithmetic Kit, part of UGEARS STEM Lab collection, consists of 2 Ready-to-Assemble models: A Mechanical Addiator and a Mechanical Multiplier! Learn how the Ugears STEM Lab model Mechanical Addiator and Mechanical Multiplier work The Mechanical Addiator is a compact arithmetic machine (or adding machine) that works by moving gear racks, using a stylus included in the kit. By moving the sliding racks, marked with arrows and numbers from 0 to 9, you can add and subtract numbers. The Mechanical Multiplier is a flat hinge mechanism that accomplishes binary operations on numbers. By moving the dual slider, you can multiply and square numbers from 1 to 12, making the multiplication table fun. Ugears STEM Lab Model kits come with all you need in a box Just like the rest of Ugears wooden model kits, putting STEM Lab models together is fun and comprehensive: everything you need to build, learn, and discover comes in a box. The Ugears STEM model kit comes with a QR-code to the study guide about the mechanisms, the principal of their working, the main characteristics, formulas. It also includes interesting assignments. Dive into augmented reality and look at how Mechanical Addiator and Mechanical Multiplier work. Interact with the models via a special AR application from Ugears. Assembly requires no glue or additional tools. Mathematics Kit Package size: 8.1*7.4*2.5 in (20.5*18.8*6.3 cm) Model Weight: 499 Grams Recommended Age: 8 + Years STEM Activity Kit Number of components: 117 Estimated time for assembly: 2.5 Hours Material Used: Plywood, Candle Wax Arithmetic Toys for Boys Model size after Assembly Mechanical Addiator : 8.5*4.3*1 in (21.5*11*2.3 cm) Mechanical Multiplier : 9.8*10*1.6 in (24.8*25.5*4 cm) STEM Engineering DIY Gifts In addition to ensuring quality leisure time, Once assembled, our STEM DIY kits for kids and wooden model kits become beautiful pieces to display at home or in the office. Enjoy the impressive cardboard GIFT BOX and the NEW Augmented Reality App Authenticated Educational Product Learn how widely-used mechanisms work and discover how they’re used in real life! Ugears takes educational mechanical models for children and adults to the next level with its latest range created with advance learning techniques in mind and loads of fun-time at their heart. With each model you get a STEM project tool-kit and a challenge to face. You have all you need in the box, so the only thing left to do is to decide who you want to invite to your project team: parents/ siblings/friends ? build your model download the app point and align the image on the screen with the model interact in Augmented Reality mode Package includes High-quality wooden boards with pre-cut details and other standard supplies. Detailed step-by-step color instruction manual. Easy to follow – easy to learn. Examples and suggestions for your fun hands-on projects. QR-code to Pocket Model’s Study Guide (the Arithmetic Set Essentials with description of the mechanism, principle of working, main characteristics, definitions and formulas). QR-code to Ugears AR Application. New exciting feature from Ugears to make your learning experience even more fascinating! Who invented the Mechanical Addiator and Mechanical Multiplier, and when? The UGEARS Mechanical Addiator is a DIY wooden model kit based on an addiator that was invented by a St. Petersburg music teacher, Heinrich Kummer, in 1846. Its simple design and compact size made it a popular mathematical tool in its time. Today this simple, fun mechanism is part of UGEARS' outstanding STEM Lab collection. The UGEARS Mechanical Multiplier is a fun wooden 3D puzzle based on a children's toy, “Consul the Educated Monkey,” invented in 1915 by William Henry Robertson, an American high school math teacher. Robertson applied for a patent for a toy that ingeniously uses a hinged mechanism to perform simple multiplication, designed "to stimulate children's interest in the study of numbers.” Assemble the Arithmetic Kit and discover how the Mechanical Addiator and Mechanical Multiplier work. Uses of The Mechanical Addiator and Mechanical Multiplier The Mechanical Addiator is used to add and subtract numbers. To do this, the user enters a number value using the stylus, then uses the stylus to enter a second number. The device then shows the result of the desired mathematical operation, according to where the second number was entered (top row for addition, bottom row for subtraction). But the Addiator is not limited to addition and subtraction—you can also use it to multiply and divide. The Mechanical Multiplier is a simple and interesting way to learn the “unloved” multiplication tables from 1 to 12, and to understand the simple principle of hinge-lever mechanisms. When the two sliders are moved to various numbers, you will see their product displayed in the window above. Face the STEM-challenge, assemble your knowledge, discover how clever you are and how creative you can be. Components of the Mechanical Addiator and Mechanical Multiplier and how they work The Mechanical Addiator consists of a housing in which four rails or racks are set, with printed values on them. A stylus is used to input values. Numbers are entered from cam slots, and the results are displayed in four center windows. Before starting an addition/subtraction operation using the stylus, the racks should be set so that all windows display "0". The value of the number on which the operation is performed is first entered using the top row of slots; the top slots are then used to add a second number, while the bottom ones are used for subtraction. The Mechanical Addiator consists of Housing Rack Stylus The Mechanical Multiplier consists of two sliders which move along a number line (1-12), and a lever system which transfers the movement of the sliders to a “Results” window, which moves along a value field. As you move the two sliders between different number values, the product of their multiplication will appear in the “Results” window. In order to multiply a number by itself (to square it), the right slider should be moved to the extreme right position and fixed at the “X²” symbol. The Mechanical Multiplier consists of Sliders Lever system Results window Value field Ugears STEM puzzles are designed to suit different age groups with a special focus on learning component. The assembly of the model will be interesting and won’t take much time.

Review: Well designed mechanical calculator
Review: Child liked

## Features

- ✅ Like all Ugears STEM models, the Addiator and Multiplier are designed to be an educational tool, rather than a merely entertaining puzzle. Their assembly is easy and fast (compared to Ugears more sophisticated models) and the learning benefits are plentiful.
- ✅ The Mechanical Addiator is a compact arithmetic machine (or adding machine) that works by moving gear racks, using a stylus included in the kit. By moving the sliding racks, marked with arrows and numbers from 0 to 9, you can add and subtract numbers.
- ✅ The Mechanical Multiplier is a flat hinge mechanism that accomplishes binary operations on numbers. By moving the dual slider, you can multiply and square numbers from 1 to 12, making the multiplication table fun.
- ✅ Everything is in the box: Similar to other UGEARS building kits for adults and 3D puzzles for kids, putting together STEM toys is fun and simple: Everything you need to build, learn, and discover comes in a box. Grab some patience and enthusiasm to assemble these model making kits on your own or in good company. These are splendid wooden model kits for adults, teens, and kids aged 8+
- ✅ Memorable gifts for automobile enthusiasts: STEM hobby kits and crafts for adults are designed to fascinate you and expand the boundaries of your imagination. Don't miss this chance to surprise and delight dedicated hobbyists and automobile enthusiasts with these model making kits!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B094QYDJ38 |
| Additional Features | Enhance Creativity Skills, No Battery Required, Non Toxic, STEM Engineering DIY Gifts, Self Assembly; No Glue Required |
| Age Range Description | 8 Years and Up |
| Best Sellers Rank | #266,034 in Toys & Games ( See Top 100 in Toys & Games ) #2,913 in 3-D Puzzles |
| Brand | UGEARS |
| Colour | Natural Wood |
| Customer Reviews | 4.5 out of 5 stars 66 Reviews |
| Educational Objective | Literacy & Spacial Awareness |
| Importer Contact Information | Shrishti Mech Puzzles Pvt Ltd. Tel - 0124 497 8957 |
| Included Components | Candle Wax, Pre-cut Plywood |
| Is Assembly Required | No |
| Item Dimensions | 20.5 x 18.8 x 6.3 Centimeters |
| Item Shape | Square |
| Item Type Name | Science Toys & Kits |
| Item Weight | 447 Grams |
| Manufacturer | Ukrainian Gears LLC, Ukrainian Gears LLC, Ochakivska str./Ochakivsky Lane 5/6, 03151, Kyiv, Ukraine |
| Manufacturer Contact Information | Ukrainian Gears LLC, Ochakivska str./Ochakivsky Lane 5/6, 03151, Kyiv, Ukraine |
| Manufacturer Part Number | 70152 |
| Material | Engineered Wood |
| Maximum Recommended age | 960.00 |
| Minimum Manufacturer Age Recommended | 96.00 |
| Minimum Recommended age | 96.00 |
| Model Number | 70152 |
| Number Of Pieces | 117 |
| Number of Pieces | 117 |
| Skill Level | Intermediate |
| Theme | Maths |
| Unit Count | 1.00 Set |

## Product Details

- **Brand:** UGEARS
- **Material:** Engineered Wood
- **Minimum Manufacturer Age  Recommended:** 96.00
- **Number of Pieces:** 117
- **Theme:** Maths

## Images

![UGEARS STEM Arithmetic Kit 2 in1 Model Kit - Creative 3D Wooden Puzzles for Adults, Teens and Children - DIY Mechanical Science Kit for Self Assembly - Educational and Engineering 3D Puzzles with App - Image 1](https://m.media-amazon.com/images/I/81cvTfi0oXS.jpg)
![UGEARS STEM Arithmetic Kit 2 in1 Model Kit - Creative 3D Wooden Puzzles for Adults, Teens and Children - DIY Mechanical Science Kit for Self Assembly - Educational and Engineering 3D Puzzles with App - Image 2](https://m.media-amazon.com/images/I/71sYpMhxr+S.jpg)
![UGEARS STEM Arithmetic Kit 2 in1 Model Kit - Creative 3D Wooden Puzzles for Adults, Teens and Children - DIY Mechanical Science Kit for Self Assembly - Educational and Engineering 3D Puzzles with App - Image 3](https://m.media-amazon.com/images/I/71ZUrL7lZYS.jpg)
![UGEARS STEM Arithmetic Kit 2 in1 Model Kit - Creative 3D Wooden Puzzles for Adults, Teens and Children - DIY Mechanical Science Kit for Self Assembly - Educational and Engineering 3D Puzzles with App - Image 4](https://m.media-amazon.com/images/I/71AUWubbqBS.jpg)
![UGEARS STEM Arithmetic Kit 2 in1 Model Kit - Creative 3D Wooden Puzzles for Adults, Teens and Children - DIY Mechanical Science Kit for Self Assembly - Educational and Engineering 3D Puzzles with App - Image 5](https://m.media-amazon.com/images/I/81mfADDjmFS.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well designed mechanical calculator
*by M***D on 16 February 2025*



### ⭐⭐⭐⭐⭐ Child liked
*by L***G on 28 September 2021*



### ⭐⭐⭐⭐⭐ Hilfreich
*by S***. on 26 September 2022*

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## Frequently Bought Together

- UGEARS STEM Arithmetic Kit 2 in1 Model Kit - Creative 3D Wooden Puzzles for Adults, Teens and Children - DIY Mechanical Science Kit for Self Assembly - Educational and Engineering 3D Puzzles with App
- UGEARS STEM Lab Math Series - Curvimeter - Unique Educational and Engineering 3D Puzzles with App | DIY Mechanical Science Kit for Self Assembly | Creative 3D Wooden Puzzles for Adults and Children

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-03-18*