2nd Grade Math: Unit 3
September 20/Oct 4 /Subtraction Up To 1,200
Fall 2018 Diagnostic Results
Second Grade: 11 students Tier 2
The Getting Students Ready for the Diagnostic test is in our Second Grade Units i-Ready folder
Mid-Year Testing: ALL STUDENTS: Plan ahead a time with Baker's Lab 8:05-8:50 and 1:40-3:00
In-class: at least 2-3 sessions (average time was 60 minutes)
i-Ready support-reports/questions date to be determined-on site
Progress Monitoring: the first one will be the first week in November-next CPC explore how to do
2017 Unit Three: Subtraction to 1,200
Met Standard: 48% Avg Score: 61 District Avg: 54%
Subtraction Test 2018
Met Standard: 34% Avg. Score: 57% District Avg.31%
Subtraction with Regrouping
2018- 73% 2017-74%
Subtraction Across Zeroes
Comparing Numbers using a Table
Teachers had the opportunity to understand the intent of the i-Ready Diagnostic Results Analysis
Targeted instruction with Instructional Decisions Based on Diagnostic Analysis-teachers will write questions directed to students' grade level
Ms. Poe provided a tour of the i-Ready Online Instruction website
Continue to visit our Second Grade Units Schoology group to assess/include resources: our pacing calendar, small group activities, instructional videos, anchor charts, etc
We will use the term compose or regroup instead of 'trade'.
Disregard the word 'borrow' in the video instead we use the term regroup.... 'borrowing' misrepresents what is taking place.
I have included this mat in your small group folder
Regrouping ones and tens work mat
2.2 Number and operations. The student applies mathematical process standards to understand how to represent and compare whole numbers, the relative position and magnitude of whole numbers, and relationships within the numeration system related to place value.
RENAMING NUMBERS- ALL YEAR
ACADEMIC VOCABULARY-ALL YEAR
2.4B subtract two digit numbers using mental math strategies based on knowledge of place value.
After students have mastered how to regroup we transition to multi-step subtraction math stories
2.4C solve one step and multi step word problems involving addition within 1,200.
2.4D generate and solve problem situations for a given mathematical sentence involving addition.-Math Journals Write a math story for 126+83=
BALANCED EQUATIONS CAN LOOK LIKE THIS...
2.7 Algebraic reasoning. The student applies mathematical process standards to identify and apply number patterns within properties of numbers and operations in order to describe relationships. The student is expected to:
MORE THAN, FEWER THAN
Subtraction Assessment: 2017
place value, chart, part, number sentence, equation, algorithm, equals,subtract, whole, minus, is the same as, relationship, difference
Mrs. Ochoa's class has 337 Dream Box points. Mrs. Sander’s class has 179 less points than Mrs. Ochoa’s class. How many Dreambox points does Mrs. Sander's have?
Represent the number sentence using the place value names-PVC CHART
Represent the whole number using pictures (models) VM, base ten blocks and PV chart:
Write the algorithm/number sentence
Reinforce vocabulary-label and discussions
Use terms: regroup ....not borrow...
Start with a mini-math Story
Place Value Mats
Base Ten Blocks/materials
Math Journal/Recording sheet( min. twice a week)
Return to math story
Focus: Expose your students to at least TWO different methods for subtraction
Number Line, Place Value Chart, OR Traditional Algorithm w/pictorial
The goal is to to allow students to develop a deeper understanding of the concept.
Write a math story to go with the number sentence
Discussion, Turn and Talk, journal/recording sheet entries..
Think Central Manipulatives
Glencoe Virtual Manipulatives
Break a Hundred (MIF Book)-Lesson Three-Subtraction with Regrouping Ones and Tens
Lesson One: Subtraction without Regrouping
Ask questions: What do we know about the story? (some fish are orange, some are not...)
Reveal the numbers..
Ask questions: What do we know? ( We know how many fish are in the pond and how many are orange) How many are orange? What are some colors the other fish could be? (red, blue. black,etc) How can we find how many are not orange?
Subtract, take away, less ____
Write the title' Subtraction without Regrouping'
Create anchor chart/SB copy with students, anchor chart should include:
- Place Value Chart-Students share how to make the chart
- Pictorial-students volunteers can come up and draw the base tens/Virtual maipulatives, Base Ten Blocks
- Number sentence/Number Bond/Bar Model-at least one or all three
- vocabulary words-label
- Solution statement-students turn and talk and share the statement.