Category Archives: Math

Math Update!

As a first grade staff, we are always striving to meet the needs of each and every student.  In order to do this, we studied the data from our students’ math performance so far this year, and used this information to group together students with similar areas of expertise and areas of need. For this unit, many of our students will be taking part in a “math switch” in which they may be traveling to a different classroom, so that they are able to work in the group and with the teacher that will help them reach their full potential as a math learner.  Each group of math learners will be working on the same math concepts each day, but the pace and practice may look a little different.

We began new math learning this past week!!  Our Unit 4 in math will focus on tens and teen numbers, place value to 100, and strategies for adding larger numbers.  So far, we’ve practiced counting groups of tens.

We studied the teen numbers (11, 12, 13, 14, 15, 16, 17, 18, 19) and noticed that every teen number has a 10 hiding inside along with some extra ones.  We also represented teen numbers using a ten stick and circles, and wrote an equation to match our work.

Math Update!

Our first graders worked hard this week to prepare for our upcoming assessment.  We spent our math time solving addition (missing total & missing partner) and subtraction stories using the great strategies that we’ve learned during this unit.

To support your child at home, please encourage him or her to always PROVE THEIR ANSWER when solving a story.  We have taught our first graders to listen to a story and make an EQUATION that matches the story.  Then we ask them to use a math mountain to solve the equation.  This is demonstrated below:

 

Math Update!

This week, we continued to work on missing partner and missing total equations and stories. We started each day off with a review of equations and the kids have grown in their ability to recognize addition or subtraction and then label the equation with the matching secret code (P + P = T or T – P = P). If you notice your child knowing the answer right off the bat, encourage them to write the answer in right away, BUT then they need to go back and check that their answer is correct by labeling the secret code, drawing the math mountain, and placing their TOTAL at the top. This will help to reinforce how important it is to check their answer and make sure it makes sense (and help eliminate silly mistakes).

  1. Circling the numbers in the story
  2. Listening to see if the story is subtraction or addition
  3. Writing the secret code that matches the story (T-P=P or P+P=T)
  4. Adding the numbers to the equation
  5. Drawing the math mountain
  6. Putting the total at the top
  7. Clapping and counting ON or UP to solve for the missing number

Math Update!

We continued to work on missing partner strategies, this week. The first graders performed very well with the strategy of:

  1. Circling the numbers in the story
  2. Listening to see if the story is subtraction or addition
  3. Writing the secret code that matches the story (T-P=P or P+P=T)
  4. Adding the number to the equation
  5. Drawing the math mountain
  6. Putting the total at the top
  7. Clapping and counting ON or UP to solve for the missing number

 We are in the habit of checking to see if the number we solved for makes sense in the math mountain (the largest number always has to go at the top). If they make a mistake, the math mountain helps them to realize this.

Math Update!

We kicked off Unit 3 this past week and introduced our first graders to a new strategy: math mountains.  A math mountain is a method for organizing the partners on bottom and the total on top.  If we aren’t sure of the total in a math mountain we can underline the greater partner and count ON.  If a partner is missing, we can underline the known partner and count UP to the total (drawing a circle for each number that we count).  The number of circles tells us the missing partner.

Our first graders solved stories that were missing a partner instead of the total this week too.  This was our first time exploring ways to solve this kind of problem.  We found that our math mountain strategy helped us organize the numbers so we could count-UP from the known partner to the total in order find the missing partner.  So, we worked hard to recognize the total and partner in each story so our math mountains made sense and our work was accurate.

Math Update!

This week, we reviewed all the concepts that we covered in Unit 2. Unit 2 covered addition and subtraction strategies and provided the foundation for all of the math learning that will take place for the rest of this year and beyond. Look for the math assessment to come home soon and check over how your child performed. Any areas that are still NOT consistently solid, we will continue to practice in our lesson warm ups and small group intervention.  This week’s homework will be a review of writing addition equations (P + P = T) and subtraction equations (T – P = P).

Math Update!

This week, we focused on subtraction equations and stories.  We continued to emphasize that a subtraction equation always begins with the total and worked hard to label all our equations so we knew which numbers to put where.

We also learned that we can use addition to help us solve subtraction.  If we know the partners for an addition equation, we can use this understanding to help us find the missing partner in a subtraction equation.

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Math Update!

We spent time studying a new math concept: SUBTRACTION!!!  When we solve stories that involve “taking something away” we use a minus sign (-) to represent what happened.  For example, when given the story:

There were 5 cookies.  I ate 3.  How many are left?

Our first graders learned to represent this thinking with circle drawing, break-apart stick, and minus sign right through the circles that were taken away:

We also emphasized that a subtraction equation always begins with the total.  Then we show the “minus” partner, which means that our answer is actually a missing partner (rather than a missing total like an addition equation).  Our first graders “trained their brains” to count up the total and write that number first to accurately represent a subtraction story or circle drawing with an equation.

With our introduction to subtraction still very fresh and new, please support your child on their homework pages as they learn to understand the strategies involved with solving and representing subtraction stories!!!!

Math Update!

Our first grade mathematicians have learned to solve addition stories by drawing pictures, using circle drawings, and writing equations.

This week each of our math groups brainstormed solution strategies for solving equations with missing totals.  To solve 5 + 2 = ___, our first graders suggested…

…making a circle drawing:  

…counting the partners on all their fingers: 

A third strategy that we learned was: COUNTING ON!!!!  Counting on is more accurate and time saving than the first two methods.  When we count on, we underline the greater number and draw dots under the smaller number to show our math work.  Then, we clap and say the greater number, and count on by pointing to and counting the circles under the smaller number.

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