CK-12 Foundation
Ck 12: Chemistry: Molecular Formula
[Free Registration/Login may be required to access all resource tools.] Defines molecular formula and describes how to write molecular formulas.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Sum and Difference Formulas
Twenty problems are presented for practice working with sum and difference formulas for sine, cosine, and tangent.
CK-12 Foundation
Ck 12: Formulas for Problem Solving
[Free Registration/Login Required] Students explore formulas such as rate by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about the concept by...
CK-12 Foundation
Ck 12: Plix: Molecular Formula
[Free Registration/Login Required] In this interactive you will move the end of each arrow to connect the label with the correct model of each molecule. You will need a sign-in to access this media, but it will be well worth your time!
CK-12 Foundation
Ck 12: Plix: Chemical Formulas and Symbols: Reactants and Products
[Free Registration/Login Required] Drag the atoms from the table to create chemical formulas. You will need a sign-in to access this media, but it will be well worth your time!
CK-12 Foundation
Ck 12: Physical Science: Chemical Formula
[Free Registration/Login may be required to access all resource tools.] How to write chemical formulae and what they represent about the substance.
BBC
Bbc: Skillswise: Formulas
This Skillswise site focuses on using formulas as understood in math. Included are a video about how using formulas is important, fact sheets and worksheets practicing with formulas, and quizzes on the information presented. The...
Education Development Center
Tune in to Learning: Get Going With Rate
Explore the concepts of rate, distance, and speed in this interactive lesson. Discover how to use formulas to solve word problems and calculate salaries. A concise lesson with excellent examples, connections to real world experiences,...
National Council of Teachers of Mathematics
Nctm: Figure This: Body Mass What's Your Index? (Pdf)
If you like tackling formulas, then this math challenge is for you. See if you can calculate Helix's BMI (body mass index) and find out if his health is at risk. A one page NCTM Math Challenges for Families activity that engages learners...
Oswego City School District
Regents Exam Prep Center: Length of a Line Segment (Distance)
Use the coordinate plane and Pythagorean theorem to determine the length of a line segment. Click on the "Topic Index" to find a related practice exercise and teacher resource.
Frostburg State University
General Chemistry Online: Ionic and Molecular Compounds
Provides a good outline of the concepts involved in ionic and covalent bonding, with links to definition of terms. Features a list of common molecular compounds and a chart that compares ionic and molecular compounds.
Illustrative Mathematics
Illustrative Mathematics: A ced.a.4: Equations and Formulas
In this exercise, students will use inverse operations to solve the equations for the unknown variable, or for the designated variable if there is more than one. Aligns with A-CED.A.4.
Illustrative Mathematics
Illustrative Mathematics: F Tf Sum and Difference Angle Formulas
The goal of this task is to have students derive the addition and subtraction formulas for cosine and tangent, and the subtraction formula for cosine, from the sum formula for sine. Aligns with F-TF.C.9.
CK-12 Foundation
Ck 12: Algebra: Formulas for Problem Solving
[Free Registration/Login may be required to access all resource tools.] Learn to use formulas to solve problems.
CK-12 Foundation
Ck 12: Trigonometry: Tangent Sum and Difference Formulas
[Free Registration/Login may be required to access all resource tools.] Here you'll learn to rewrite tangent functions with addition or subtraction in their arguments in a more easily solvable form.
CK-12 Foundation
Ck 12: Trigonometry: Sine Sum and Difference Formulas
[Free Registration/Login may be required to access all resource tools.] Sine of a sum or difference related to a set of cosine and sine functions. Here you'll learn to rewrite sine functions with addition or subtraction in their...
CK-12 Foundation
Ck 12: Trigonometry: Cosine Sum and Difference Formulas
[Free Registration/Login may be required to access all resource tools.] Examples, videos, and practice problems covering cosine of a sum or difference related to a set of cosine and sine functions. Here you'll learn to rewrite cosine...
CK-12 Foundation
Ck 12: Trigonometry: Applications of Sum and Difference Formulas
[Free Registration/Login may be required to access all resource tools.] Solving equations and verifying identities with the sum and difference formulas.
Upper Canada District School Board
Tom Stretton's Advanced Placement Chemistry: Atoms, Molecules and Ions
This online textbook chapter provides learners with advanced-level material on the structure and relationships between atoms, molecules and ions.
Texas A&M University
Wtamu Virtual Math Lab: Beginning Algebra: Formulas
This tutorial will show you how using formulas can help you solve problems. Include formulas for various geometric shapes and steps showing how to use them.
Cool Math
Coolmath: Precalculus Basic Formulas to Know
This CoolMath resource provides an introduction to some Precalculus formulas.
Khan Academy
Khan Academy: Bonus Challenge
This article gives a step-by-step guide to how the boundary lines in a Voronoi diagram can be calculated.
Math Medics
S.o.s. Math: The Quartic Formula
This lesson provides information on the quartic formula. Examples are provided with answers.
Other
Fernbank: Review of Ionic Charges
At this site from Fernbank you can become a pro by practicing them with this review game.