Sunday, June 4, 2017

Probability of drawing Cards without replacement

Mathberry Lane Problem of the Week: Probability

We ended the year in Algebra 2 with a quick unit covering probability.  This week's problem finds the probability of drawing 2 types of cards without replacement.

Clipart credit to: 
This document was created using licensed graphics from Glitter Meets Glue Designs. It is a violation of copyright law to “lift” the graphics for other purposes. To obtain your own license, visit

Sunday, May 28, 2017

Transform Logarithm Graphs

This week's problem has 2 different solutions.  Depending whether your students are in Algebra 2 or Pre-Calculus might depend on the solution students create.  In an algebra 2 class, I would expect students to use the properties of logarithms and find the a,h, and k values of the function to determine the sequence of transformations.  In pre-calculus, some students might still do this, but in this course, the horizontal compression/stretch would also be taught, resulting in a different sequence of transformations that still satisfy the transformation mapping f(x) onto g(x).

Transforming Log Functions by Mathberry Lane

Saturday, May 20, 2017

Solving Logarithm Equations

Mathberry Lane: Problem of the Week

I used the solving problem below as warm up last week in class.  I found that some students were exponentiating the logs individually, instead of condensing both sides of the equation first.  I created the error analysis version of the problem.  We had discussion about the need for condensing the logarithm before continuing to solve the equation.

This solution uses a combination of the property of logarithmic exponents and the product rule in place of the quotient rule.  I introduce the quotient rule in this manner and students discover the quotient rule on their own.

Sunday, May 14, 2017

Road Frontage Acre of Land Problem

This week's skill is finding the side length of a square when given the area.  This problem is taken to the next level, because students need to first find out how many square feet are in an acre.

acre of land geometry

Saturday, April 29, 2017

Simplify Logarithm Expression

Mathberry Lane - Problem of the Week

Lately we have been working with logarithms in class. Here is a quick easy warm up.

Saturday, April 22, 2017

Monday, April 17, 2017

Find the length of Segment AB - Coordinate Geometry

Mathberry Lane Problem of the Week

I love problems that can be solved different ways.  The problem below can be solved using the distance formula, Pythagorean's Theorem or even special right triangles.

Mathberry Lane: Find the length of a segment - Coordinate Geometry