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# Birthday Parties eNotebook

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### Birthday Parties eNotebook

1. 1. The Mathematics of Birthday Parties Dani Ewanouski Julia Quinlan
2. 2. Whens Your Birthday?• There are 365 days in a year. That means there are 365 different birthdays!• In a leap year, which is every 4 years, there are 366 days.• People who are born on February 29th can celebrate their birthday on February 28th or March 1st, unless it is a leap year.
3. 3. Geometry• Birthday Cakes can come in all different sizes and shapes. They can be rectangles, squares, and circles.• A piece cut out of a circular cake is a triangle.• A piece cut out of a rectangle cake or a square cake can be both square and rectangle.• Birthday cakes are symmetrical.• Birthday party hats are cone shaped
4. 4. Baking a Birthday Cake• Ingredients• 3 cups all-purpose flour• 2 cups white sugar• 5/8 cup unsweetened cocoa powder• 1 teaspoon salt• 2 teaspoons baking soda• 1 teaspoon vanilla extract• 2 cups cold water• 2 teaspoons distilled white vinegar• 2/3 cup vegetable oil• Directions• Mix all ingredients right in a 9 x 13 inch pan.• Bake at 350 degrees F (175 degrees C) for 35 minutes. Remove from oven and cool. Frost with your favorite frosting.
5. 5. Nutritional Facts about Birthday CakeAmount per ServingCalories:310Calories from Fat:144.0Total Fat:16g 24%Saturated Fat:3.5g17%Cholesterol:10mg3%Sodium:220mg 9%Total Carbohydrate:41g 13%Dietary Fiber: 1g 4%Sugars: 27gProtein:2g 4%
6. 6. The cost of a Birthday Party.• 8 party hats for \$2.50• One large pizza for \$19.99• One birthday cake for \$15.00• Balloon set of 50 for \$29.99• Party Theme set of decorations \$22.50• Paper Plates, Cups, Napkins, Silverware \$15.75• Total: \$105.73
7. 7. Probability in Birthday Parties• Twister is a common birthday party game.• In the game twister we are using probability to see our chances:• When you play twister the probability of the spinner landing on red, blue, green, or yellow is ¼ or 1 out of 4• Players take a chance of falling with each movement to a new spot.
8. 8. Pizza at Birthday Parties• Pizza is a commonly eaten food at birthday parties.• A pizza is circular and is commonly divided into 8 triangular slices. When you divide the pizza this way, each person receives 1/8 of the pizza.• If you eat 4 slices of the pizza, it is equivalent to eating ½ of the entire pizza.
9. 9. Temperatures for Birthday Food• A birthday cake is baked at 350 degrees.• A pizza is baked at 400 degrees.• After opening icing, the left overs can be stored in the refrigerator at 45 degrees.• Before eating, cake can be stored in the fridge or at room temperature. Room temperature is around 68 to 75 degrees.
10. 10. The Birthday Song• The time signature of the song is ¾.
11. 11. Algebra• The number of candles to put on the cake is the x (age the child is turning) plus 1 (for good luck).• Algebra can solve the amount of each ingredient used in the recipe depending on how much cake you are going to make.