These links are great resources to help build student number sense specific to their grade level. They should not only try to find the correct answer but should also be able to explain their thinking. The goal of these activities is for students to solve problems in multiple ways and make connections among different topics.
Number Talks give students the chance to discuss different strategies to solve problems of a large variety. Number Talks for Pre-K through 5th
Number Sense routines are introduced on this site as well as examples for every grade level broken apart by type of challenge. Number Sense & Reasoning Routines
If you are able to recognize small quantities without counting each individual item, you are subitizing. This is an essential skill for students as a foundation to be successful in math. This website provides Subitizing & Estimation Challenges. These slides also provide you with subitizing practice.
This resource has several example Number Talks for building fluency around the 4 operations by encouraging strategies such as making friendly numbers, adding up, doubling, halving, etc. for grades 3-5.
Many times we see students struggling to understand fractions because they have misconceptions about the importance of equal sized pieces, comparing when wholes are represented in different sizes, and representing the value shown with numerals. Below are a few resources to support student understanding by increasing their number sense around fractions.
This blog walks through an introduction to fractions lesson using an inquiry based learning approach. The full lesson is included as well as the teacher's commentary about student work and reflections on the lesson.
Additional resources similar to the ones found in the blog can be found on this site and can be shown as slides or printed out. The structure of the resources is designed to allow for flexibility in implementation and scaffolding.
Drill Squares (Google Slides)
Drill Squares are a unique and challenging way to help students become more fluent while also incorporating positional words. They can be used multiple times with individuals, small groups, or a whole class. The slides attached include the directions and Drill Squares for addition, subtraction, and multiplication.
Addition and Subtraction Fluency (Use as slides or print out as flashcards)
This presentation represents numbers in multiple ways to encourage students to use numbers flexibly and build their fluency. They are designed to encourage students to use strategies such as decomposing, composing, counting on, counting back, making 5, and making 10.
Multiplication and Division Fluency (Use as slides or print out as flashcards)
This presentation represents numbers in multiple ways to encourage students to use numbers flexibly and build their fluency. They are designed to encourage students to use strategies such as equal groups, arrays, skip counting, the commutative property, the distributive property, and more to understand how multiplication and division work.
The Multiplication Course by Steve Wyborney (links to all chapters and videos here)
This link will take you to the links for all 12 chapters in Steve Wyborney's Multiplication Course. The videos are short and are designed to help strengthen students understanding of multiplication by encouraging multiple strategies while learning facts.