Addition Launchpad Slides Day 1 • Addition to 20
Mission: Addition
Addition Launchpad
Power up your math skills! Today we unlock math words, secret addition rules, and the speedy Counting On strategy.
1
Math Words
Addend + Addend = Sum
2
Two Big Rules
Order & Zero Power
3
Count On!
Start big & jump ahead
Essential Math Vocabulary
Meet the Addition Family
8
Addend
A part we join
5
Addend
Another part
=
13
Sum
The total all together!
Add means to combine parts to find the total! Say it with me: Addend + Addend = Sum!
Addition Rule #1
The Commutative Property (Order Rule)
Start with 7, add 4
7 + 4 = 11
Flip it! Start with 4, add 7
4 + 7 = 11
"Change the order of the addends, and the sum stays the exact same!"
Addition Rule #2
The Zero Property (Identity Rule)
When you add 0 to any number...
Zero means none . You aren't adding any more parts, so the number stays identical!
16 + 0 = 16
0 + 9 = 9 (Never changes!)
12 + 0 = 12 (Still 12!)
20 + 0 = 20 (Hero Zero!)
Math Superpower: Any Number + 0 = The Same Number!
Strategy Spotlight
How to Count On to Add
Problem: 3 + 12 = ? Use Commutative Rule: Think 12 + 3!
1
LOCK IN BRAIN
Put the bigger number in your head: 12
2
COUNT FORWARD
Tap 3 times forward: 13... 14... 15!
3
TOUCHDOWN!
The last number said is your sum: 15!
12
➔
13
➔
14
➔
15
Pro Math Tip: Counting on works best when the second addend is 1, 2, 3, or 4!
Whole-Group Practice
Choral Count & Callout
Lock & Count!
Challenge 1
14 + 3 = ?
Lock 14 ... count 15, 16, 17!
Challenge 2
2 + 15 = ?
Switch to 15 + 2 ... count 16, 17!
Challenge 3
18 + 0 = ?
Zero rule! Sum stays 18!
How did you solve it? Turn and tell your partner your thinking!
Partner Game Time
Count On Cargo!
Grab your partner, your game board, and two dice. You will race your cargo ships across the stars up to 20!
Step 1: Roll & Pick
Find the bigger number and lock it in your brain.
Step 2: Count & Claim
Count on the second number and claim your cargo space!
Materials: Cargo Game Board, 10-sided or standard dice, counters. Ready, Set, Add!
Count On Cargo Activity Day 1 • Partner Addition Game
Count On Cargo!
Pilot 1: ______________________
Pilot 2: ______________________
Game Rules: Take turns! Spin Spinner A (large addend) and Spinner B (count-on amount: +0, +1, +2, +3, +4). Say: "I lock [__] in my brain and count on [__] more to land on [__]!" Place your colored marker on the sum. First pilot to claim 4 cargo crates in a row or 8 total crates wins!
Star Cargo Bay ( sums 1 to 20 ) Place counter / cube when you solve!
CRATE #1
1
1 + 0
CRATE #2
2
2 + 0
CRATE #3
3
3 + 0
CRATE #4
4
3 + 1
CRATE #5
5
4 + 1
CRATE #6
6
4 + 2
CRATE #7
7
5 + 2
CRATE #8
8
6 + 2
CRATE #9
9
7 + 2
CRATE #10 ★
10
Halfway!
CRATE #11
11
8 + 3
CRATE #12
12
9 + 3
CRATE #13
13
10 + 3
CRATE #14
14
11 + 3
CRATE #15
15
12 + 3
CRATE #16
16
12 + 4
CRATE #17
17
14 + 3
CRATE #18
18
15 + 3
CRATE #19
19
16 + 3
GOAL #20 🏆
20
Max Cargo!
Pilot Math Talk Sentence Stems
Order Property: "I see 2 + 14, so I switch it to 14 + 2!"
Zero Property: "I added 0, so the sum remains identical!"
Flight Log & Spinner Station
Mission Record Sheet
Use a pencil and paperclip to spin!
Spinner A: Big Cargo Addend
11
15
8
14
9
12
7
16
Starting Number (Addend 1)
Strategy Sparks Slides Day 2 • Addition to 20
Mental Math Superpowers
Strategy Sparks
Say goodbye to counting on fingers! Today we use Doubles, crack Near Doubles, and unlock the magic of Making 10.
2x
Doubles Facts
Twinned numbers to 20
+1
Near Doubles
Doubles plus one!
10
Making 10
Bridge to friendly 10
Strategy 1: Twin Power
The Doubles Powerhouse
Eyes
1 + 1
= 2
Dog legs
2 + 2
= 4
Insect legs
3 + 3
= 6
Spider legs
4 + 4
= 8
Two Hands
5 + 5
= 10 ★
Egg carton
6 + 6
= 12
Two weeks
7 + 7
= 14
Crayon pack
8 + 8
= 16
Big semi wheels
9 + 9
= 18
Fingers & Toes
10 + 10
= 20 ★
When two addends are the same, the sum is always an even number!
Strategy 2: The +1 Detective
Near Doubles (Doubles Plus 1)
Problem: 6 + 7 = ? 7 is just 1 more than 6!
Step 1: Spot the Double
6 + 6
I already know this is 12 !
+1 more
Step 2: Add 1 More
12 + 1 = 13
So 6 + 7 = 13 !
Think: 7 + 8 = ? 7 + 7 = 14 ➔ +1 = 15!
Think: 8 + 9 = ? 8 + 8 = 16 ➔ +1 = 17!
Detective Rule: If two numbers sit right next to each other on the number line, use Double the smaller number and add 1!
Strategy 3: The Friendly Ten
Making 10: The Magic Bridge
Problem: 8 + 5 = ?
8 needs 2 more to fill a 10-frame!
Borrow from the 5:
8
5
(2) (3)
Split 5 into 2 and 3 !
Now add with friendly 10:
8 + 2 = 10 (Full Frame!)
10 + 3 = 13!
Adding to 10 is super fast and easy!
Whenever an addend is 8 or 9 , make 10 first!
Double Dash Game Activity Day 2 • Partner Strategy Game
Double Dash!
Player 1 (Color A): ________________
Player 2 (Color B): ________________
How to Play: On your turn, pick an open square. Solve the doubles or near-doubles equation out loud. Explain your strategy: "I know 6+6=12, so 6+7 is 1 more, which is 13!" If your partner agrees, color the box with your crayon. First player to connect 4 squares in a line (row, column, or diagonal) wins the Dash!
Double Dash Game Grid (Claim 4 in a line) Doubles & Near-Doubles Facts
DOUBLES 5 + 5
NEAR DOUBLE 5 + 6
DOUBLES 7 + 7
NEAR DOUBLE 7 + 8
DOUBLES 9 + 9
NEAR DOUBLE 6 + 7
DOUBLES 6 + 6
NEAR DOUBLE 8 + 9
DOUBLES 8 + 8
NEAR DOUBLE 9 + 10
DOUBLES 4 + 4
NEAR DOUBLE 4 + 5
WILD DOUBLE ★ 10 + 10
NEAR DOUBLE 3 + 4
DOUBLES 3 + 3
NEAR DOUBLE 8 + 7
DOUBLES 8 + 8
NEAR DOUBLE 6 + 5
DOUBLES 7 + 7
NEAR DOUBLE 7 + 6
DOUBLES 6 + 6
NEAR DOUBLE 9 + 8
DOUBLES 5 + 5
NEAR DOUBLE 5 + 4
DOUBLES 9 + 9
Mental Check: Double 6 is 12 • Double 7 is 14 • Double 8 is 16 • Double 9 is 18
Near Double = Double + 1
Strategy Lab • Ten-Frame Bridge
Make 10 Strategy Mat
Decompose the second addend to fill ten!
Model Rule:
Borrow from the second addend to fill the first 10-frame completely, then add the leftovers!
8 + 5 ➔ 10 + 3 = 13
Problem 1: 9 + 5 = ? 9 needs 1
Split 5 into: 1 and ____
New Equation: 10 + ______ = ______
Problem 2: 8 + 6 = ? 8 needs 2
Split 6 into: 2 and ____
New Equation: 10 + ______ = ______
Problem 3: 8 + 7 = ? 8 needs 2
Split 7 into: 2 and ____
New Equation: 10 + ______ = ______
Problem 4: 9 + 8 = ? 9 needs 1
Split 8 into: 1 and ____
New Equation: 10 + ______ = ______
Partner Dialogue: Compare Strategies
Look at Problem 4 (9 + 8). One student solved it using Near Doubles (8 + 8 + 1). Another student used Make 10 (10 + 7). Who got the right answer? Which way do you like better and why?
Three Addends Slides Day 3 • Addition to 20
Three Numbers & Story Solvers
Three Numbers Solved!
Three addends in one problem? No sweat! Today we hunt for friendly pairs and crack real-world story mysteries.
10
Make 10 First
Find 10 buddies in the trio
2x
Find Doubles
Pair matching addends
?
Story Sleuth
4-step problem solving
Strategy 1: Friendly Ten Friends
Hunt for Ten First!
Solve: 4 + 7 + 6 = ? Do you see two numbers that make 10?
Step 1: Group the 10
4 + 6 = 10
Join the two ten-friends first!
Add the 3rd number
Step 2: Add 7
10 + 7 = 17
Fast and seamless mental math!
Ten pairs to watch for: 1 + 9 2 + 8 3 + 7 4 + 6 5 + 5
Key Rule: You can group and add numbers in any order you want!
Strategy 2: Double Trouble
Spot the Twins in the Trio!
Solve: 5 + 8 + 5 = ? Spot the identical twins!
Step 1: Double Fact
5 + 5 = 10
Combine the twin addends first!
Then add remaining 8
Step 2: Add 8
10 + 8 = 18
Total sum is 18 !
Try in your head: 3 + 9 + 3 3 + 3 = 6 ➔ 6 + 9 = 15!
Try in your head: 4 + 7 + 4 4 + 4 = 8 ➔ 8 + 7 = 15!
Mathematician Wisdom: Always scan all 3 numbers before you start adding!
Problem-Solving Protocol
The 4-Step Story Sleuth Routine
1
READ & CIRCLE
Read twice. Circle numbers and underline what the question asks.
"What do I know?"
2
PLAN STRATEGY
Pick your path: Make 10? Doubles? Counting On?
"How will I group?"
3
WRITE EQUATION
Write the number sentence with addends and find the sum.
"a + b + c = ?"
4
LABEL & CHECK
Write the answer with its unit label and check if it makes sense!
"17 cookies!"
Never just write a number - mathematicians always include the unit word!
Modeled Example
The Sweet Treats Bakery
Maya baked 7 blueberry muffins, 5 chocolate donuts, and 3 cinnamon rolls for the school bake sale. How many baked treats did Maya make in all?
Problem Solver Station Cards Day 3 • Small-Group Problem-Solving Stations
Math Mission Challenge Cards
Display or cut out for 4 rotation stations!
Station 1: Pet Rescue Story #1
Officer Leo welcomed animals to the shelter today:
8 fluffy puppies5 playful kittens2 golden puppies
How many animals are at the shelter in all?
Clue: Find two addends that make 10!
Station 2: Toy Workshop Story #2
Benny the toy builder finished three batches of toys:
6 wooden race cars on Monday7 puzzle boxes on Tuesday6 wooden sailboats on Wednesday
How many toys did Benny build altogether?
Clue: Look for matching twin doubles!
Station 3: Fruit Smoothie Story #3
Chef Zara dropped delicious fruit into the mega-blender:
9 red strawberries4 sweet pineapple chunks1 whole juicy kiwi
How many pieces of fruit were blended in all?
Clue: 9 loves to pair with 1 to make 10!
Station 4: Space Explorer Story #4
Astronaut Maya discovered glowing space crystals:
5 blue star stones8 purple meteorite gems5 golden sun crystals
What is the total sum of space crystals collected?
Clue: 5 + 5 gives you a friendly 10 launchpad!
Station Routine: 1. Read card together ➔ 2. Group friendly numbers ➔ 3. Write on Detective Mat!
Turn page for recording sheet ➔
Math Mission Station Organizer
Station Detective Recording Mat
Detective: _____________________
Date: ___________________________
Station 1: Pet Rescue Puppies & Kittens
Strategy: Make 10 Doubles Count On
Equation: ___ + ___ + ___ = ___
Answer with Unit: _______________________
Station 2: Toy Workshop Benny's Toys
Strategy: Make 10 Doubles Count On
Equation: ___ + ___ + ___ = ___
Answer with Unit: _______________________
Station 3: Fruit Smoothie Zara's Fruits
