# Open Number Line

## Collection by Sheila Sikes

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addition color by number by michelle.mullis on Indulgy.com

We are up to our elbows in addition AND subtraction. According to the new Common Core Standards the traditional algorithm is a fourth grade standard (CCSS.Math.Content.4.NBT.B.4 Fluently add and subtract multi-digit whole numbers using the standard algorithm.). We wanted to make sure we offered students SEVERAL strategies for addition and subtraction so that the algorithm actually makes SENSE rather than becomes a

I love having a theme and focus! Recently I’ve written several posts about number talks and mental strategies for computation. Check out Adding on a 120 Chart, Exploring Addition Strategies, and More Mental Math Strategies. So far, I haven’t really talked about the kiddos showing their thinking on paper–something that could be used for independent […]

I love vacation, but it’s GREAT to be back home! So, somewhere on a trail in the mountains of Georgia, I got to thinking about open number lines. That’s a math buzz word you hear a lot these days, but what exactly is an open number line? Well, it’s a number line with no numbers or […]

Did anyone else catch the tiny mistake in the Pirate Addition pack? Thank you, Carin, for pointing it out! I'm such a perfectionist so I can...

It seems we have started back to school a good bit earlier than many of the rest of you, so I thought I might share our initial experiences ...

I love vacation, but it’s GREAT to be back home! So, somewhere on a trail in the mountains of Georgia, I got to thinking about open number lines. That’s a math buzz word you hear a lot these days, but what exactly is an open number line? Well, it’s a number line with no numbers or […]

Technology is a great way to engage students in the learning. These free number sense technology tools help students develop deep understanding of numbers.

I love vacation, but it’s GREAT to be back home! So, somewhere on a trail in the mountains of Georgia, I got to thinking about open number lines. That’s a math buzz word you hear a lot these days, but what exactly is an open number line? Well, it’s a number line with no numbers or […]

I love vacation, but it’s GREAT to be back home! So, somewhere on a trail in the mountains of Georgia, I got to thinking about open number lines. That’s a math buzz word you hear a lot these days, but what exactly is an open number line? Well, it’s a number line with no numbers or […]

Amy Lemons provides teaching tips and resources for teachers of elementary school students with access to a free resource library.

Rounding numbers is one of those skills that is often taught using “tricks” and “rules”. Don’t believe it? Google “rounding to the nearest 10” and take a look at some of the pages returned by the search. Since rounding usually falls early in the year, I want to talk tonight about teaching rounding for deep […]

Get your students up and moving this fall to practice adding double digit numbers by adding on an open number line. Clipart courtesy of Melonheadz Illustrating...

I'm on a mission to help your students feel successful and engaged. Your entire classroom can be transformed using simple principals of student engagement.

We are teaching several common core strategies to our third graders this year to help them add and subtract. One of those strategies is usi...

Looking for another addition strategy? This pack simplifies and guides students step-by-step on how to add with a number line. Students begin adding only multiples of tens and gradually work to adding two digits with grouping. This packet includes "how to directions" on page 4 for parents, bu...