First period

Contents

Ms. Alejandra Cáceres

Counting Sequence

·       Count forward to 120

·       Count backwards from 30

·       Read and write numbers 0-50

·       Orally express the ordinal numbers (first - tenth) in relation to the written form (1st - 10th)

Operations & Algebraic Thinking

Sets/Grouping

·       Sets with shapes

·       Group by shape, color and size

Addition

·       Relate counting to addition

·       Add within 20

·       Create equivalent sums (e.g., 6 + 7 = 6 + 6 +1=12 +1=13)

·       Number line

Key Concepts:

Counting On or making ten to solve Results

Unknown and Total Unknown problems

· Solve word problems with three addends, two of which make ten

· Associative and commutative properties to make ten with three addends

· Make ten when addend is 9

· Commutative property to make ten

· Solve problems with addends of 7, 8, and 9

· Solve word problems with subtraction of 9 from 10

· Relate counting on to making ten and taking from ten

· Subtract 7, 8, and 9 from teen numbers

Strategies for solving change or addend unknown problems

· Relate counting on to the take from

Questions to Focus Instruction and Assessment:

● How do we know when to subtract and when to add?

● How can we solve addition problems?

● How can we solve subtraction problems?

● How do we use counting when solving problems?

● What numbers make 10? ten strategy

· Solve add to with change unknown problems

· Equivalent expressions with an equal sign

Varied problems with decompositions of teen numbers as 1 Ten and some Ones

· A bundle of ten = “tens” 1-9 = “ones”

· Addition and subtraction problems decomposing and composing teen numbers as 1 ten and some ones

· Two-step solutions

Mayan Numbers 0-19 (Level 1)

· Connection to our number system

· Write and interpret numbers Tens and Ones

· Count by 10s

· Use place value chart to record and name tens and ones within a two-digit

number

· Interpret two-digit numbers as tens

Questions to Focus Instruction and Assessment:

Why does data organization help us?

What are the components of an equation?

How can we check/prove that both sides of the equation have the same value?

Can you draw the Mayan number ____ ?

Why do we separate the numbers into tens and ones?

How does addition/subtraction relate to counting?

Can you count by 10s to 40?

What are the symbols for comparing numbers?

What is the difference between addition and subtraction?

EX: Can you subtract 12 from 38?

EX: Can you add 13 to 21?

Can you identify the tens and ones place and ones

· Two digit numbers as addition sentences that combine tens and ones

· Identify 10 more, 10 less, 1 more , and 1 less than a two digit number (Ex: What

number is 10 more/less than 56?)

Comparison of Pairs of Two-Digit Numbers

· Compare two quantities, and identify the greater or lesser of the two given

numerals

· Compare quantities and numerals from left to right

Use symbols >, =,

Welcome dear parents and students! 

I´m really happy to share this year with you... let´s learn and have fun moments together!! 

Please check here our news, our contents, and some interesting post! 

Please if you have doubts or questions can you contact me by email: mcaceres@cas.edu.gt 

See you soon! 

Ms. Ale