Math Medic uses "Experience First, Formalize Later" as their philosophy when creating lessons. I've loaded resources from them into the scope & sequence, but their blog is worth looking at too!!

This collection was created by Texas educators and is aligned to Texas State Standards. However, they aren't that different than California's. (The courses are the traditional pathway, though.) 

Delta Math offers practice problems with solution videos with our premium accounts! It's a great way of offering targeted practice by skill. Here is the link to a training by Jeff Wong.

Don Steward's Fantastic Math Resources

Goal-free problems offer more students an opportunity to engage with problems by removing the cognitive load of a goal. Here is a link to problems good for C1/2.

Visual Patterns

Here are examples of connecting the way the patterns grow to algebra: Beginning, Advanced. 

This is a site that reveals graphs or data in stages so that students can make sense of it and refine it as more is revealed. It's great scaffolding for justifying claims!

This link will take you to a page with a video, as well as a written"how to."

This website contains examples from Algebra & Geometry, as well as a "How to Use This" that can be used as great entry routines.

Here is another site with the same idea with GRAPHING!