## The Top 10 Most Viewed Problems of 2015

1. Two-Step Equations by Audrey Mendivil, Daniel Luevanos, and Robert Kaplinsky

2. Rational and Irrational Numbers by Bryan Anderson

3. Order of Operations by Robert Kaplinsky with answer from Michael Fenton and his students

4. Interpretting Percentages by Robert Kaplinsky

5. Adding Two-Digit Numbers Given One by Robert Kaplinsky

6. One Solution, No Solutions, Infinite Solutions by Bryan Anderson

7. Multiplying a Two-Digit Number by a Single-Digit Number by Robert Kaplinsky

8. Dot Card Counting by Dan Meyer

9. Exponents and Order of Operations by Zack Miller

10. Converting Between Fractions and Decimals by Robert Kaplinsky

2. Rational and Irrational Numbers by Bryan Anderson

3. Order of Operations by Robert Kaplinsky with answer from Michael Fenton and his students

4. Interpretting Percentages by Robert Kaplinsky

5. Adding Two-Digit Numbers Given One by Robert Kaplinsky

6. One Solution, No Solutions, Infinite Solutions by Bryan Anderson

7. Multiplying a Two-Digit Number by a Single-Digit Number by Robert Kaplinsky

8. Dot Card Counting by Dan Meyer

9. Exponents and Order of Operations by Zack Miller

10. Converting Between Fractions and Decimals by Robert Kaplinsky

## What are people saying about Open Middle?

Have you checked out http://t.co/MzUjCDPB0R @openmiddle Should be on your short list of math ed resources #MTBoS #mathchat #maths #elemchat

— Brian Marks (@Yummymath) February 27, 2015

Check out @openmiddle! Great and fun questions that should be used in all math classes. Let's #UpTheDOK and help grow our students' brains!

— Daniel Luevanos (@danluevanos) February 8, 2015

This question from @openmiddle is revealing so much about Ss understanding for quads & coord proof! #geomchat pic.twitter.com/WxBdeaFqVc

— Lisa Bejarano (@lisabej_manitou) February 8, 2015

Just stumbled on this treasure trove of challenging problems: http://t.co/ZewE61whG1 #mtbos #mathchat

— Andrew Busch (@abusch38) March 19, 2014

Have you checked out http://t.co/DHAqABj9Z9 for math ed resources? #mathedresources #mathchat #maths http://t.co/C0oedfZmoz

— CC Math Resources (@CCMathResources) March 2, 2015