# Lesson 121 – Doodles Do Algebra

Today your child learns the final method of solving for two variables when given two independent equations. This is called Elimination by Addition and Subtraction. The basic idea is to set up the equations so that you can either add or subtract them from (or to) each other and eliminate one of the variables. DoodlePoodle […]

# Lesson 120 – Doodles Do Algebra

Today your child learns the second way to solve for 2 unknowns in 2 independent equations. This is called Elimination by Comparison and basically what you do is manipulate each equation until you have one variable equaling a bunch of stuff that includes the second variable for both equations. Then you set the “bunch of […]

# Lesson 119 – Doodles Do Algebra

Today your child starts the next step: solving simple equations for 2 unknowns. The first point to notice is that in order to solve for 2 unknowns, you need to have 2 independent equations. You can remind your child that independent equations are ones that cannot be simply reduced to be equal. So x=4 and […]

# Lesson 118 – Doodles Do Algebra

Today your child gets to do some word problems using what he learned about solving simple equations in the last several lessons. These are the same types of problems that he did when he began this Doodles Do Algebra series in the “mental math” section of the curriculum. If you tell your child that he […]

# Lesson 117 – Doodles Do Algebra

Today is the last day of lessons on the topic of solving simple first degree equations. In the next lessons we will move onto the various methods of solving two unknowns, instead of just one. But for today, your child needs positive feedback and encouragement. He needs to know that he has learned a tremendous […]

# Lesson 116 – Doodles Do Algebra

Today’s lesson is yet more practice solving first degree equations and we add known quantities (like a, b, and c) into the mix along with the unknown and numbers. Every day we just add a bit more complexity to algebra and before you know it, your child will have learned the subject completely and without […]

# Lesson 115 – Doodles Do Algebra

Today is more practice solving simple equations, just like yesterday’s lesson. Your child gets to work through problems that require all three of the steps in solving simple equations. We increase complexity of the problems as we go and look at what happens when one term in the equation is not a fraction, but the […]

# Lesson 114 – Doodles Do Algebra

In today’s lesson, DoodlePig (our fabulously intelligent guinea pig) teaches your child all three of the steps of solving a simple, first degree equation. She explains it really quite well (even though she is only a cartoon, and a cartoon guinea pig at that) so I don’t need to add anything to the teacher’s notes […]

# Lesson 113 – Doodles Do Algebra

Today your child learns to solve a first degree equation, well the first step anyway. Solving simple equations involves three steps, the first of which is clearing the equation of fractions by multiplying through by the least common multiple. The Least Common Multiple is a term your child learned a number of lessons ago and […]

# Lesson 112 – Doodles Do Algebra

Finally we are ready to solve equations! Today your child starts learning about how to solve simple equations of the first degree (these are equations where the unknown is not squared or cubed, or taken to any power beyond one). But the first step, just like every other subject your child learned in this curriculum, […]