Motion Math: Hungry Fish is designed for a wide grade range of kids, some of whom may have already learned the fundamentals of addition and subtraction. It’s excellent for practice but isn't a substitute for the conceptual understanding that comes from working with concrete materials -- use both practices in tandem. Hungry Fish will help kids memorize certain combinations of two or more numerals, and while computational fluency does allow for flexible methods of computing (i.e., without pencil and paper), it does assume that whatever method kids use is grounded in understanding.Continue reading Show less
In Motion Math: Hungry Fish, the title character wants to eat a number shown on its side; kids combine number bubbles to create the food it wants. To subtract, kids combine positive and negative numbers. It’s designed for a wide range of grade levels and with six games and 18 difficulty levels, so kids can use Motion Math: Hungry Fish for years of practice as their math skills grow. The app allows more than one player to register, so multiple kids can play without affecting other players' progress or scores. Levels of difficulty vary by speed and what the fish wants; in the easiest levels, kids simply match number bubbles. Leveling up depends on how fast the fish grows. In Caves games, a Mad Fish eats wrong answers and endangers the hungry fish. Rewards include points and options to customize your fish. To change the difficulty level, pause any game or visit the Options area. The pro version has two types of games for addition, subtraction, and negatives practice and 18 levels of difficulty. It’s based on Common Core standards for math in kindergarten through fourth grade.
Full Disclosure: Motion Math and Common Sense Education share a funder; however, that relationship does not impact Common Sense Education's editorial independence and this learning rating.
Kids learn addition and subtraction as they combine positive and negative number bubbles to create the number the fish wants to eat. The game makes smart use of touch-screen interactivity. The touch, drag, and combine actions are similar to how kids learn arithmetic with number cubes; here, they'll enjoy the immediate feedback they get from the number-bubble combos and the growing or shrinking fish. In short order, they learn which number combinations get results, and voila! They’re doing mental math.
A few functions help gauge kids' learning. Each game is timed so if the fish is not fed enough, he shrinks until he -- and the player -- no longer survives. But once kids learn how to make correct combinations, there are two ways to advance. If they're speedy about combining numbers and feeding the fish so it grows big pronto, they automatically win the level and advance to the next hardest one. If a player's pace allows the fish to survive the level but not grow really big, he's rewarded with lots of correct number bubbles to end the level.
Key Standards Supported
Counting And Cardinality
Identify whether the number of objects in one group is greater than, less than, or equal to the number of objects in another group, e.g., by using matching and counting strategies.1
Compare two numbers between 1 and 10 presented as written numerals.
Understand the relationship between numbers and quantities; connect counting to cardinality.
Count to answer “how many?” questions about as many as 20 things arranged in a line, a rectangular array, or a circle, or as many as 10 things in a scattered configuration; given a number from 1–20, count out that many objects.
Count to 100 by ones and by tens.
Count forward beginning from a given number within the known sequence (instead of having to begin at 1).
Write numbers from 0 to 20. Represent a number of objects with a written numeral 0-20 (with 0 representing a count of no objects).
Number And Operations In Base Ten
Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.
Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three- digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
Fluently add and subtract multi-digit whole numbers using the standard algorithm.
Operations And Algebraic Thinking
Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.2
Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
Apply properties of operations as strategies to add and subtract.3 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)
Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8.
Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 – 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2.
Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ – 3, 6 + 6 = _.
Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two one-digit numbers.
Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.1
Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.
Represent addition and subtraction with objects, fingers, mental images, drawings2, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.
Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem.
Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1).
For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation.
Fluently add and subtract within 5.