Khan Academy
Khan Academy: Find Base and Height on a Triangle
Identify the height of a triangle when given the base. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Physical Science: Properties of Bases
[Free Registration/Login may be required to access all resource tools.] What a base is and its properties and uses. How to detect and measure the strength of bases.
Chem4kids
Chem4 Kids: Acids & Bases
This Chem4Kids site provides a general overview of acids and bases, and their use in chemistry. Content focuses on "names to know" and how acids and bases work.
Sophia Learning
Sophia: Calculating P H
A video tutorial demonstrating how to calculate the pH of a solution given the hydrogen ion concentration. [3:44]
Sophia Learning
Sophia: Chemical Reaction Types: Acid Base
This narrated screencast demonstrates the products of the acid base reaction of water and a salt. [2:01]
CK-12 Foundation
Ck 12: Unknown Dimensions of Parallelograms Grade 7
[Free Registration/Login may be required to access all resource tools.] Find unknown dimensions of parallelograms given area and one other dimension.
Chem4kids
Chem4 Kids: Quiz: Acids and Bases
A quiz testing your knowledge of acids and bases. Quiz gives immediate feedback on whether your answer was right or wrong with an explanation.
University of Arizona
Pulse: Industrialization, Chemicals and Human Health
While students gain an understand of basic environmental toxicology, they explore the health impacts of industrialization on society in these lessons. This is a cross curricular unit that addresses standards for eleventh grade in math,...
US Environmental Protection Agency
Epa: Soil Buffering Experiment
Use this site to explore the experimentation process of "Soil buffering."
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Percent With a Calculator Problems
Students practice solving percent problems. To see the answers learners need to roll their mouse over the colored area.
BBC
Bbc: Gcse Bitesize: Types of Chemical Reactions
This lesson focuses chemical reactions using acidic and alkaline solutions, the pH scale which measures the acidity or alkalinity of a solution, and how to use a pH meter. A link to an assessment is also provided.
BBC
Bbc: Gcse Bitesize: Acids, Alkalis and Salts Aqa
This lesson focuses on acids and alkalis including acidic and alkaline solutions, neutral solutions, indicators and the pH scale, the colors for litmus paper, and a link to a test.
BBC
Bbc: Gcse Bitesize: Types of Chemical Reactions
Bases are substances that can react with acids and neutralize them. Alkalis are bases that are soluble in water. The pH scale measures how acidic or alkaline a substance is. Substances with a pH lower than 7 are acidic, those with a pH...
Purple Math
Purplemath: Number Bases: Introduction & Binary Numbers
The process of converting between different number bases is actually fairly simple, but the thinking behind it can seem a bit confusing at first. And while the topic of different bases may seem somewhat pointless to you, the rise of...
Khan Academy
Khan Academy: Algebra Ii: Solve Exponential Equations Using Logarithms
Solve exponential equations that have 2 or other numbers at the base of the exponential term. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Solve Exponential Equations Using Logarithms: Base 10 and Base E
Solve exponential equations that have 10 or e at the base of the exponential term. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Analysis: Logarithmic Functions
[Free Registration/Login may be required to access all resource tools.] Evaluating logarithmic functions by comparing to exponential functions and rewriting to solve.
CK-12 Foundation
Ck 12: Arithmetic: Values Written as Powers
[Free Registration/Login may be required to access all resource tools.] Write repeated factors as powers.
CK-12 Foundation
Ck 12: Algebra: Evaluate Numerical, Variable Expressions With Powers
[Free Registration/Login may be required to access all resource tools.] In this lesson students evaluate numerical and variable expressions involving powers. Students can watch a video tutorial, explore guided notes and attempt practice...
Chem Tutor
Chemtutor: Weak Acids and Bases
For high school or college chemistry students. Discusses the use of dissociation constants to determine strength of an acid or base.
CK-12 Foundation
Ck 12: Geometry: Area of a Parallelogram
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to find the area of a parallelogram. Students examine guided notes, review guided practice, watch instructional videos and attempt...
Homeschool Math
Homeschool Math: Area of Triangles
This lesson presents the idea that the area of any triangle is exactly half of a certain parallelogram -- thus we get the familiar formula of multiplying the base and the altitude and taking half of that. The lesson contains varied...
Khan Academy
Khan Academy: How Do Organisms Maintain a Constant P H Range?
Practice questions related to how organisms maintain constant pH range acids.
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Addition and Multiplication With Volume and Area
A guide to support parents as they work with their students in addition and multiplication with volume and area.