Operations and Algebraic Thinking Apps

 

App Name: Number Rack

Cost: Free

Device(s): iPad, iPhone, and the Web

Appropriate Grade(s): K – 1st

Content: Number Sense

Common Core State Standards:

CCSS.MATH.PRACTICE.MP7 - Look for and make use of structure.

CCSS.MATH.PRACTICE.MP8 - Look for and express regularity in repeated reasoning.

K.OA.A.1 - Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.

 

Description: Number Rack is a virtual manipulative that encourages students’ innate development of number sense. Each row has ten moveable beads, that allows students to work with the concept of grouping in fives and ten. More importantly, through Number Rack, students are able to formulate addition and subtraction strategies from their own fun math exploration. 

 

 

 

 

App Name: Sushi Monster

Cost: Free

Device(s): iPad, iPhone, and iPod

Appropriate Grade(s): 1st – 5th

Content: Addition and Multiplication

Common Core State Standards:

CCSS.MATH.CONTENT.1.OA.A.1 - 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.

CCSS.MATH.CONTENT.3.OA.A.3 - Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

CCSS.MATH.CONTENT.3.OA.A.4 - Determine the unknown whole number in a multiplication or division equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 × ? = 48, 5 = _ ÷ 3, 6 × 6 = ?

CCSS.MATH.CONTENT.3.OA.B.5 - Apply properties of operations as strategies to multiply and divide.2 Examples: If 6 × 4 = 24 is known, then 4 × 6 = 24 is also known. (Commutative property of multiplication.) 3 × 5 × 2 can be found by 3 × 5 = 15, then 15 × 2 = 30, or by 5 × 2 = 10, then 3 × 10 = 30. (Associative property of multiplication.) Knowing that 8 × 5 = 40 and 8 × 2 = 16, one can find 8 × 7 as 8 × (5 + 2) = (8 × 5) + (8 × 2) = 40 + 16 = 56. (Distributive property.)

 

Description: Sushi Monster is an excellent app for practicing addition and multiplication skills on any grade level. The objective is for students to feed the sushi monster the appropriate amount of food by determining which of the two plates will produce the amount of food desired. This app challenges students to think critically and determine the appropriate plate using their math skills. Students will have so much fun unlocking new monsters that they won’t even realize they’re learning.