Thank you for making time to check out my second video. Here are the resources I mentioned:
 
Problem Solving Framework
This two-page PDF should be printed double-sided and is designed to support students’ emerging problem solving skills.
 
Problem-Based Lesson Search Engine
This search engine searches all of the sites below and many others. You can search by standard, topic, or context.
 
Graham Fletcher (K-7)
Many problem-based lessons for K-5 with 20+ tasks in K-2 alone.
 
Kristen Acosta (K-8)
A growing collection of problems for elementary students.
 
Catherine Castillo (1-5)
A growing collection of problems for elementary students.
 
Robert Kaplinsky (website version) (2-12)
This is the visual version of my problems.
 
Robert Kaplinsky (spreadsheet version) (2-12)
This is a Google Sheet version of my problems.
 
Dan Meyer (3-12)
Many problems, primarily for middle and high school.
 
Dane Ehlert (3-12)
These problems go all the way to Calculus.
 
Kyle Pearce (3-12)
These problems are also aligned to the Ontario standards.
 
Andrew Stadel (4-8)
These are primarily for middle school standards.