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Middle School Algebra Invisible Math Posters - Bulletin Board Classroom Decor

This set of 20 posters is great for reminding students of often-forgotten math principles! They are colorful and perfect for brightening up a bulletin board! Please take a look at the preview file for a visual overview of everything included. For a softer, more calming set of posters for your classroom, check out my watercolor-themed poster set.

This resource contains:

• 20 Colorful posters with 2 different variations

• "Invisible Math" banner with 4 different variations (including black & white)

20 Invisible Math Posters Include:

• Multiplication

• Division

• Every number has a denominator of one.

• A number without a sign in front is a positive.

• A number & variable written together implies multiplication.

• Every number has an exponent of one.

• Any number raised to the zero power equals one.

• A negative sign in front of an absolute value bracket is the same as multiplying by -1.

• Every variable has a coefficient of 1 in front.

• Two negative signs next to each other (means multiplication) will produce a positive answer.

• The distributive property allows you to multiply each term in parentheses by the number outside of it.

• Every square root has an index of 2.

• A variable raised to the -1 is the same as one over that variable.

• Every whole number has a decimal at the end.

• A number can’t be divided by zero.

• Adding a negative number is the same as subtracting that number.

• A negative sign in front of a radical is the same as multiplying by -1.

• Two minus/ negative signs is the same as one positive sign.

• The square root of a negative won’t produce a real number (it produces an imaginary number).

Order of Operations (PEMDAS) Math Posters - Bulletin Board Classroom Decor

This resource contains these 3 acronyms:

• PEMDAS - Parenthesis, Exponents, Multiply or Divide (left to right), Add or Subtract (left to right)

• GEMDAS - Grouping Symbols, Exponents, Multiply or Divide (left to right), Add or Subtract (left to right)

• GEMS - Grouping Symbols, Exponents, Multiply/Divide (left to right), Subtract/Add (left to right)

The four formats include (see thumbnails and preview for reference):

All posters have Black and White Versions

• Vertical Poster

• Horizontal Poster

• Small Posters with Description

• Small Posters without Description