Pumpkin Addition Slide Deck Hands-On Math Lab
Cut • Paste • Add
Adding Like Denominators
Pumpkin Patch
Fraction Addition
Combine your harvest! Cut colored paper slices and fill pumpkin frames across 3 harvest levels.
1/4
1/4
1/4
?
1/4 Orange + 2/4 Gold = 3/4 Total!
Get your scissors, glue stick, and level worksheet ready! Slide 1 of 5
1
The Golden Rule of Adding Fractions
Keep the Bottom Number!
The Addition Formula
1
4
2
4
=
3
4
Only add the numerators: 1 + 2 = 3
Why Doesn't the 4 Change?
✓
The slice size stayed the same!
Both pieces are fourths of a pumpkin.
✓
The whole still takes 4 pieces!
We are simply counting how many fourths we have.
Golden Mantra: "Add the top, keep the bottom!" Slide 2 of 5
2
How to Cut & Build with Colors
Hands-On Instructions
Step 1: Snip
Cut the Dashed Line
Cut across the red dashed line to separate your cutout ribs from the workmat.
Cut across here first!
Step 2: Match
Follow the Colors
Orange ribs match the 1st fraction. Gold ribs match the 2nd fraction.
1st Fraction
2nd Fraction
Step 3: Paste
Fill the Pumpkin
Paste the ribs into the pumpkin frame. Count the total filled to get your sum!
Total glued parts = New Numerator!
Use just a tiny dab of glue for each paper rib! Slide 3 of 5
3
Three Harvest Levels
Choose Your Patch
Level 1: Sprout
Halves & Thirds
Big, friendly pieces! Great for building fraction confidence with halves, thirds, and fourths.
Example: 1/3 + 1/3 = 2/3
Pre-filled bottom numbers
Level 2: Patch
Fourths, 6ths & 8ths
Core addition practice! Paste ribs into 4, 6, and 8-segment pumpkins plus harvest equations.
Example: 2/6 + 3/6 = 5/6
Full equation solving
Level 3: Challenge
Missing & Overflow
Solve missing addends, add 3 parts, and handle improper fractions that spill past 1 whole pumpkin!
3/4 + 2/4 = 5/4 = 1 1/4
Advanced multi-step math
Check with your teacher to see which Harvest Level worksheet is yours! Slide 4 of 5
!
Beware the Denominator Trap!
Common Mistake Alert
Does 1/4 + 2/4 = 3/8?
NO! Never add denominators together!
The Common Mistake
1/4 + 2/4 = 3/8
Adding 4 + 4 gives 8, which changes the size of the pieces!
The Correct Method
1/4 + 2/4 = 3/4
The pieces are still fourths! 1 piece + 2 pieces = 3 pieces of fourths!
Harvest Checklist: ✓ Ribs glued in pumpkin ✓ Numerators added ✓ Denominator unchanged
Ready to harvest? Work carefully with your scissors and glue! Slide 5 of 5
Pumpkin Sprout Addition Worksheet Pumpkin Sprout Addition
Level 1: Sprout
Hands-On Adding: Halves, Thirds & Fourths
Name:
Date:
Sprout Tip: Count the colored pieces you paste into the pumpkin. The bottom number stays the same!
1 top + 1 top = 2 on top!
1 Cut, Paste & Add: Halves, Thirds & Fourths
Paste Orange + Gold pieces. Count total filled parts!
Pumpkin 1 Halves (2)
\(\frac{1}{2}\) + \(\frac{1}{2}\) =
2
1/2
1/2
1 Orange + 1 Gold = 1 Whole!
Pumpkin 2 Thirds (3)
\(\frac{1}{3}\) + \(\frac{1}{3}\) =
3
1/3
1/3
1/3
1 Orange + 1 Gold = 2/3 filled
Pumpkin 3 Fourths (4)
\(\frac{1}{4}\) + \(\frac{2}{4}\) =
4
1/4
1/4
1/4
1/4
1 Orange + 2 Gold = 3/4 filled
2 Sprout Practice: Write the Missing Top Number
The bottom number is already done for you!
Halves
\(\frac{1}{2}\) + \(\frac{1}{2}\) =
2
1 + 1 = ?
Thirds
\(\frac{1}{3}\) + \(\frac{1}{3}\) =
3
1 + 1 = ?
Fourths
\(\frac{2}{4}\) + \(\frac{1}{4}\) =
4
2 + 1 = ?
Fourths
\(\frac{3}{4}\) + \(\frac{1}{4}\) =
4
3 + 1 = ?
Farmer Mia's Story: Mia paints \(\frac{1}{3}\) of a pumpkin green and \(\frac{1}{3}\) orange. How much of the pumpkin is painted?
Answer:
Cut Across This Line First • Big Friendly Pieces!
Sprout Fraction Rib Cutouts
Orange = First Part Gold = Second Part
Halves Pieces
1 Orange 1/2 one half
1 Gold 1/2 one half
1/2 + 1/2 = 2/2 (Whole Pumpkin!)
Thirds Pieces
Orange 1/3 one third
Gold 1/3 one third
1/3 + 1/3 = 2/3 filled
Fourths Pieces
Orange 1/4 •
Gold 1/4 •
Gold 1/4 •
1/4 + 2/4 = 3/4 filled
Pumpkin Addition Activity Sheet Pumpkin Patch Addition
Level 2: Patch
Hands-On Adding: Fourths, Sixths & Eighths
Name:
Date:
The Golden Rule: The denominator stays the same! Only add the numerators (top numbers)!
\(\frac{a}{d} + \frac{b}{d} = \frac{a+b}{d}\)
1 Cut, Paste & Add: Fill Each Pumpkin
Paste Orange + Gold pieces into each pumpkin, then write the sum
Problem 1 Fourths
\(\frac{1}{4}\) + \(\frac{2}{4}\) =
4
1/4
1/4
1/4
1/4
Paste 1 Orange + 2 Gold ribs
Problem 2 Sixths
\(\frac{2}{6}\) + \(\frac{3}{6}\) =
6
1/6
1/6
1/6
1/6
1/6
1/6
Paste 2 Orange + 3 Gold ribs
Problem 3 Eighths
\(\frac{3}{8}\) + \(\frac{4}{8}\) =
8
Paste 3 Orange + 4 Gold ribs
2 Autumn Harvest Addition Practice
Add the numerators. Keep the denominators the same!
Problem A
\(\frac{2}{5}\) + \(\frac{2}{5}\) =
Total fifths
Problem B
\(\frac{1}{7}\) + \(\frac{4}{7}\) =
Total sevenths
Problem C
\(\frac{3}{10}\) + \(\frac{4}{10}\) =
Total tenths
Problem D
\(\frac{5}{12}\) + \(\frac{6}{12}\) =
Total twelfths
Harvest Word Problem: Leo harvested \(\frac{2}{9}\) of a pumpkin patch in the morning and \(\frac{5}{9}\) in the afternoon. What fraction was harvested altogether?
Answer:
Cut Across This Line First • Keep Top Sheet Safe!
Pumpkin Addition Cutout Ribs
Orange = First Fraction Gold = Second Fraction
Fourths Ribs
Orange 1/4 •
Gold 1/4 •
Gold 1/4 •
1 orange + 2 gold = 3 fourths glued!
Sixths Ribs
Org 1/6 •
Org 1/6 •
Gold 1/6 •
Gold 1/6 •
Gold 1/6 •
2 orange + 3 gold = 5 sixths glued!
Eighths Ribs
O 1/8 •
O 1/8 •
O 1/8 •
G 1/8 •
G 1/8 •
Pumpkin Challenge Addition Worksheet Pumpkin Challenge Addition
Level 3: Challenge
Missing Addends, 3 Parts & Overflow Sums
Name:
Date:
Master Challenge: Solve for the missing fraction, add 3 parts together, and handle fractions greater than 1 whole!
\(\frac{3}{4} + \frac{2}{4} = \frac{5}{4} = 1\frac{1}{4}\)
1 Advanced Pumpkin Models: Cut & Paste
Solve each unique challenge below
Mission 1 Missing Addend
\(\frac{2}{8}\) +
8
= \(\frac{7}{8}\)
Paste 2 Orange + ? Gold to reach 7/8
Mission 2 3 Addends
\(\frac{1}{6}\) + \(\frac{2}{6}\) + \(\frac{2}{6}\) =
6
Paste 1 Orange + 2 Gold + 2 Berry ribs
Mission 3 > 1 Whole!
\(\frac{3}{4}\) + \(\frac{2}{4}\) =
4
= 1
4
Fill Pumpkin 1, spill extra to Pumpkin 2!
2 Challenge Harvest Equations
Find the missing addend or mixed number sum
Problem A
\(\frac{4}{9}\) +
= \(\frac{8}{9}\)
Missing fraction
Problem B
\(\frac{5}{11}\) + \(\frac{4}{11}\) + \(\frac{1}{11}\) =
Sum of 3 parts
Problem C
\(\frac{4}{6}\) + \(\frac{5}{6}\) =
Improper fraction
Problem D
Write \(\frac{9}{6}\) as mixed #:
e.g., 1 and 3/6
Grand Champion Problem: A giant pumpkin pie was cut into 12 slices. The bakers ate \(\frac{3}{12}\), visitors ate \(\frac{5}{12}\), and judges ate \(\frac{2}{12}\). What fraction was eaten, and what fraction remains?
Eaten:
Left:
Cut Across This Line First • Challenge Zone Ribs
Challenge Cutout Ribs
Orange Gold Berry
Eighths (Mission 1)
O1/8•
O1/8•
G1/8•
G1/8•
G1/8•
G1/8•
G1/8•
2/8 + 5/8 = 7/8!
Sixths (Mission 2)
Org1/6•
Gld1/6•
Gld1/6•
Ber1/6•
Ber1/6•
1/6 + 2/6 + 2/6 = 5/6!
Fourths (Mission 3)
Org1/4•
Org1/4•
Org1/4•
