Abacus Adventure 1 vs 4th Grade Math School Edition

• Learn how to use abacus step by step. • Train your abacus skill with interesting games. • Best mental arithmetic calculation apps. 36+49-26 = ? Can you do the math above in few seconds? By using the abacus mental method, all the people can do it fast and accurately. Abacus Adventure Features: • Full tutorial of how to use abacus. • Using the abacus method mentally, train up mental calculation in more systematic and faster way. You will be able to handle more complicated calculation in the future. • 55 stages in this game, including all the training and tutorials. A normal course of abacus mental cost you $500 or more, you got to save a lot of money and time by using this amazing app. • Unlocks the stages, save the princess, collect the coins and more fun!! • This app is designed by qualified mental abacus teachers and tested by hundreds of students. Best for children age 5+.

In 4th grade math the emphasis is on multi-digit multiplication and division, developing an understanding of fractions and decimals, plus developing fluency in addition and subtraction. “These apps are a favorite in my house.” "I love all of the Math Galaxy apps for their ease of use." See the rest of the review at: https://web.archive.org/web/20180129020131/http://www.smartappsforkids.com/2017/12/review-4th-grade-math-common-core-from-math-galaxy-is-another-top-pick-.html Preview on YouTube: https://www.youtube.com/watch?v=XF3DZGafi5I Math Galaxy’s Fourth Grade Math covers all of the Common Core math standards for fourth grade as listed below. The concepts are presented in bite-size pieces with an unlimited supply of problems. Illustrations are used throughout to reinforce the concepts. The app does not collect, retain, or share personal information and contains no advertising or third-party analytics. NUMBERS AND OPERATIONS IN BASE 10 (4.NBT) Generalize place value understanding for multi-digit whole numbers. Use place value to perform multi-digit arithmetic. Flashcards. (4.NBT) Place Value (4.NBT.2) Place Value Blocks (4.NBT.1) Place Names Expanded Notation Comparing Numbers Ordering Numbers Rounding & Estimating (4.NBT.3) Adding Whole Numbers (4.NBT.4) 3-4-Digit Addition (traditional) Alternative Method - Partial Sums Subtracting Whole Numbers (4.NBT.4) 3-4-Digit Subtraction Multiplying Whole Numbers (4.NBT.5) 1-Digit x 2, 3, or 4-Digits 2-Digit x 2-Digit Mult & Div by 10's Dividing Whole Numbers (4.MBT.6) Relating Division to Multiplication 1-Digit Divisor, 2-4-Digit Dividend Zero’s in Quotient Missing Number OPERATIONS AND ALGEBRAIC THINKING (4.OA) Use the four operations with whole numbers to solve problems. Gain familiarity with factors and multiples. Multiplicative Comparison (4.OA.1, 2) Word Problems (2) Multi-Step Word Problems (3) Factors & Prime Numbers (4) Patterns (5) NUMBER AND OPERATIONS - FRACTIONS (4.NF) Extend understanding of fraction equivalence and ordering. Understand decimal notation for fractions and compare decimal fractions. Identifying Fractions (4.NF.1) Fractions on # Line (1) Part of a Group (1) Equivalent Fractions (1) Comparing Fractions (2) Reducing & Improper Fractions (3a) Adding & Subtracting Like Fractions (3b) Multiplying Fractions (4) Fractions Word Problems (3c, 4c) Writing Decimals (6) Decimals on # Line (6) Comparing Decimals (7) Ordering Decimals (7) Adding 10ths and 100ths (5) MEASUREMENT AND DATA (4.MD) Solve problems involving measurement and conversion of measurements. Measurement Conversions (4.MD.1,2) Length (1,2) Area & Perimeter (1-3) Volume (1,2) Liquid Volume (1,2) Graphs (4) Mass (in Riddles game) (1,2) Time (in Riddles game) (1,2) Angles (5-7) GEOMETRY (4.G) Draw and identify lines and angles, and classify shapes. Terminology (4.G.1-3) Measuring Angles Angles Games Labyrinth (a maze game) The Money Trail Bridge the Swamp Snakes and Ladders Measurement Riddles