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Angle A and Angle C are complementary Angle B and AngleC are complementary Prove Angle A = Angle B

If n is an integer, then prove n^2 + n + 6 is even

Magic squares

Prove P(A’) = 1 - P(A)

Geometric Mean {3, 27} {4, 4, 8, 2}

Find missing value given an average

Mid-range of a number set. This is the mean of the largest and smallest numbers in the set.

Nikola Tesla’s Solfeggio Frequency Math Another fascinating discovery of the Universe. You may or may not have heard of the Solfeggio Frequencies. If not, they are holy musical tones that go back to the Gregorian Monk ages. They are tuned as follows: 174 Hz, 285 Hz, 396 Hz, 417 Hz,…

Melt Math Anxiety using 2 letters

Common core state standards 4.NBT.A.2 - Place value 123,456 place value 123,456,789 place value

Common core state standard 4.NBT.A.1 - place value division 700/70 300/10 900/90

Common core state standard 3.NBT.A.1 - round using place value Example Problem(s): round 34 to the nearest 10 round 45 to the nearest 10 round 148 to the nearest 100 round 351 to the nearest 100

Common Core State Standards 3.OA.A.2 - Quotients as Groups of Objects 6/3 8/2

Common core state standard 3.OA.A.1 - Groups and objects 2 groups of 3 objects each 4 groups of 5 objects each

Common Core State Standard (3.NF.A.3.D) - Compare fractions with matching numerators or deniminators

Common Core State Standards (3.NF.A.3.C) - Whole Numbers as Fractions Express whole numbers as fractions, and recognize fractions that are equivalent to whole numbers. Examples: Express 3 in the form 3 = 3/1; recognize that 6/1 = 6; locate 4/4 and 1 at the same point of a number line…

Common Core State Standards (3.NF.A.3.B) - Recognize and generate simple equivalent fractions Recognize and generate simple equivalent fractions, e.g., 1/2 = 2/4, 4/6 = 2/3. Explain why the fractions are equivalent, e.g., by using a visual fraction model. Timestamps: 00:00 Intro 00:13 Equivalent fractions for 1/4 01:04 Equivalent fractions for…

Common Core State Standards (3.NF.A.1) - Decompose Fractions Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b. Timestamps: 00:00 Introduction 00:19 decompose 3/5 01:02 decompose…

Common Core State Standards (2.OA.C.4) - Array of Equal Addends Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends Timestamps: 00:00 Introduction 00:23…

Common Core State Standards (2.NBT.A.1) - 3 Digit Number Place Values Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Timestamps: 00:00 Intro 00:19 Place Values for 706 01:00 Place Values for 514…

Common Core State Standards (2.MD.C.8) - Coin Denominations. Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately. Example: If you have 2 dimes and 3 pennies, how many cents do you have? Timestamps: 00:00 Introduction 00:18 2 dimes 3 pennies 00:52 9…

Common Core State Standards (1.NBT.B.2) - Two Digit Numbers Have Tens and Ones Understand that the two digits of a two-digit number represent amounts of tens and ones Timestamps: 00:00 Intro 00:20 Place Value for 23 00:45 Place Value for 38 01:10 Place Value for 79

Common Core State Standards (1.NBT.A1) - Count to 120, starting at any number less than 120. Timestamps: 00:00 Intro 00:15 Count to 120 01:10 Count to 120 by 5 01:48 Count to 120 by 10