How to get started with Illustrative Mathematics Algebra 1
The program is free and available directly through the Illustrative Mathematics website. You do not need to pay anything. The curriculum is hosted at illustrativemathematics.org and you can access it without an account if you just want to browse lessons. If you want students to track progress or submit work, you register for the teacher portal. It takes about five minutes to set up, and then you are in. The main course page is under the math section of their site. Lessons are organized by unit, and each unit breaks down into daily lessons. I downloaded the full course as PDFs once when I needed offline access for a student who had spotty internet at home. The files are reasonable size—each unit runs roughly 40 to 60 megabytes total. That download process took about 15 minutes on a standard broadband connection. The digital version includes interactive problems where students manipulate variables and get immediate feedback. The PDF versions strip that interactivity out but keep all the problem text and diagrams intact. Some teachers prefer the PDFs for printing. Others stick with the online version because the feedback loop catches mistakes early.
There is one thing most people miss when they start using this curriculum. The problems are not standalone practice sets. They are sequenced intentionally, and the instructional narrative builds across several lessons before asking students to perform certain manipulations independently. If you skip ahead or assign problems out of order, students will get confused. I learned this the hard way in my second year of teaching. I assigned Unit 3 problem sets ahead of the lesson coverage because I thought I was being efficient. Half the class stalled on slope calculations. They had not seen the scaffolding yet. I spent two days going back and filling gaps that the curriculum was supposed to provide. The workaround was simple but annoying. I mapped every lesson to its prerequisite concepts first, then built the schedule backward from there. It added maybe 20 minutes of prep time per unit, but it eliminated most of the confusion down the line. I do this mapping before the semester starts now. Always. Another detail that does not get mentioned enough: the answer keys are not bundled into a single document. Each lesson has its own answer set embedded within the teacher resources section. If you are trying to grade quickly, you need to open each lesson individually. It sounds minor, but it slows things down. I created a master spreadsheet linking each problem number to its answer location. That cut my grading time from about 45 minutes per class period down to roughly 12 minutes. The spreadsheet took me three hours to build, but it paid off immediately.
The curriculum covers linear equations, systems of equations, functions, linear functions, solving linear equations, inequalities, operations with polynomials, factoring, quadratic equations, radical expressions, and rational expressions. That is the standard high school algebra sequence, but the treatment is different from traditional textbooks. The emphasis is on conceptual understanding before procedural fluency. Students graph relationships before they memorize slope formulas. They discuss patterns before they derive the quadratic formula. This approach works well for most learners. It does not work well if you have a student who needs procedural repetition to retain information. Those students sometimes struggle in the first few units because the curriculum does not give them enough drill. For those students, I supplement with targeted practice from other sources. Khan Academy works adequately for this purpose. I also use old textbook problem sets from authors like Lial or Blitzer for extra procedural work. The supplement takes about 10 to 15 minutes per class session, three times a week. It does not replace the core curriculum. It fills a gap that the core curriculum intentionally leaves open. One more practical note about the interactive problems. They can be finicky on certain browsers. I ran into an issue last year where the graphing tool in Lesson 2.4 would not load on Chrome but worked fine on Firefox. The students using Chrome were stuck for about 10 minutes before I figured out what was happening. I switched the class to Firefox for those lessons and moved on. If you run into similar issues, check the browser compatibility notes on the site before spending time troubleshooting.
Get the Full Details
The curriculum is updated periodically. Version numbers matter less than the date stamp on the lesson. Always check the revision date when downloading materials to make sure you are not using outdated content. The IM team has corrected errors in past releases, and some schools are still running older PDFs they downloaded years ago. If you are evaluating whether to adopt this program, try a unit or two before committing. The pedagogical approach is not for every classroom. It requires students to articulate reasoning in writing and discussion. Classes that rely heavily on direct instruction and worksheet completion will find friction here. Classes that can handle talk and argumentation will likely see better engagement and deeper retention. I have taught both styles, and the difference is noticeable over a full semester. The materials are freely available. The setup is straightforward. The main challenge is pacing and supplementing where needed. Nothing about this is complicated if you approach it with patience.
