Show what you know about equivalent fractions and ordering by choosing three activities (in a row, column, or diagonal) to complete the tic-tac-toe board. Standards assessed: 3.NF.3a-d, 4.NF.1, 4.NF.2. This assessment was designed for adult basic education.
Challenging math problems worth solving.
The name “Open Middle” might sound like a strange name for a website about math problems. However, it references a very specific type of problem we try to encourage here. Most of the problems on this site have:
* a “closed beginning” meaning that they all start with the same initial problem.
* a “closed end” meaning that they all end with the same answer.
* an “open middle” meaning that there are multiple ways to approach and ultimately solve the problem.
Open middle problems generally require a higher Depth of Knowledge than most problems that assess procedural and conceptual understanding. They support the Common Core State Standards and provide students with opportunities for discussing their thinking.
Newtonian Mechanics whereby fundamental concepts (momentum, energy, force, motion) are introduced on the first day and developed in parallel. Access entire curriculum: comprehensive lecture videos with questions, textbook (calculus based, algebra based, and conceptual), exams, syllabus, past student evaluations.
Newtonian Mechanics whereby fundamental concepts (momentum, energy, force, motion) are introduced on the first day and developed in parallel. Access entire curriculum: comprehensive lecture videos with questions, textbook (calculus based, algebra based, and conceptual), exams, syllabus, past student evaluations.
Full Curriculum, Newtonian Mechanics whereby fundamental concepts (momentum, energy, force, motion) are introduced on the first day and developed in parallel. Access entire curriculum: comprehensive lecture videos with questions, textbook (calculus based, algebra based, and conceptual), exams, syllabus, past student evaluations.
Newtonian Mechanics Full Curriculum whereby fundamental concepts (momentum, energy, force, motion) are introduced on the first day and developed in parallel. Access entire curriculum: comprehensive lecture videos with questions, textbook (calculus based, algebra based, and conceptual), exams, syllabus, past student evaluations.