# 50+ IB Maths AI IA Ideas

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## IB Math AI HL IA Ideas

**1.) Employing Optimization To Minimize Amount Of Packaging Material.**

**Mathematics:**

Using mathematical concepts like** differentiation and integration** to derive generalized conditions that minimize the surface area and hence the packaging of these differently shaped goods (example: conical, cuboid and irregular shaped goods).

**Procedure:**

The actual surface area will be found using the existing dimensions. Then, the volume of a standard cylindrical shape is differentiated to find out if a minimized surface area exists. Once the minimum dimension values are found, the minimum surface area will be calculated. This is repeated for conical, cuboid and irregular shaped goods.

**Analysis**:

Total wastage is calculated by subtracting the minimized surface area from the actual surface area.

**2.) Finding the optimal route using algorithms.**

**Mathematics:**

Using the **Brute Force algorithm, the Nearest Neighbor and the Deleted Vertex** to find the optimal route.

**Procedure:**

The Brute Force algorithm takes into account all of the Hamiltonian cycles. A formula is used to calculate the number of different routes you can take (Hamiltonian cycles) by inputting the number of points on the route. After calculating the distances of all possible routes, the route with the shortest distance can be found. The next method is the Nearest Neighbor. The way that that works is, you would start at a point and go to the nearest point with the shortest distance. This will be continued until you reach back to the beginning point. This will give the upper bound or the minimum value the distance should be. As for the deleted vertex, the first step would be to delete a vertex and all the edges connecting to that point. This will leave you with the “minimum spanning trees” where you have to add the values of these distances. Then, you find two edges of the discarded edges from before and add the values to the totaled distance from step 1. Repeat this procedure for each deleted vertex and see which one yields you the highest value.

**Analysis:**

The methodologies used are compared to conclude which the most efficient algorithm is to calculate the optimal route from one point to the other.

**3.) Modeling the velocity of a skydiver and calculate the height at which he opens the parachute.**

**Mathematics:**

Using **Newton’s laws to model the velocity** of objects in motion using techniques like integration.

**Procedure:**

Using basic integration, a differential equation is found for the final velocity of free-fall. Then, an equation for the terminal velocity of the man while considering drag force is derived. Later, the height at which the diver pulls out the parachute is calculated. Integration is used to find the vertical displacement.

**Analysis:**

The outcome of this investigation would be to determine a height value for when the diver pulls out the parachute. Limitations and strengths will further need to be discussed.

**4.) Mathematical modeling behind a perfect 3-point shot.**

**Mathematics:**

Calculate the** appropriate parabola, degree angle, and force for a variety of height**, accordingly, determine the perfect 3-point throw. Mathematical concepts such as trigonometry, quadratics, linear regression and moderate physics calculations are used.

**Procedure:**

Specific heights of people were collected and is considered to be the independent variable. Other constant variables such as arc lengths and angle degrees were plugged into the equations according to the height. The data will then be modeled in a graphing software to visualize the 3 point shots. Lastly, the parabola of the perfect shot is calculated for each condition.

**Analysis:**

These factors can be explored in relation to their impacts on the probability of scoring a 3-point shot by manipulating the height variable to investigate 3 different scenarios. The investigation will explore the impact of height differences in players on the modeled curve of a shot and its ability to enter the net perfectly.

**5.) Modeling the shape of a coconut to explore the best method to calculating the volume of irregular objects.**

**Mathematics:**

Different methods of calculating the volumes of a coconut are compared to find the most appropriate method through the application of calculus, basic mathematical formulae and graphical software’s.

**Procedure:**

Using the dimensions of a coconut, the first method is using the ellipsoid formula. The values are substituted and the volume of the coconut is found. The second method is comparing the accuracy of an ellipse formula and manually marking the coordinates to form an ellipse using a graphing software. The more viable method is used to calculate the volume. The last method is to use a graphing software to mark coordinates that make two parabolas facing each other (up and down). These two parabolas need to be marked in a way where they take the shape of the coconut.

**Analysis:**

The results of all three methods are compared in terms of percentage error and the method that provided the most accurate answer is concluded.

## IB Math AI SL IA Ideas

**1.) Is there a relationship between the height of a basketball player and their shooting ability.**

**Mathematics:**

This IA investigates the correlation between height and shooting ability in basketball using the **Pearson’s correlation coefficient and chi-squared.**

**Procedure**:

The data of height and number of basketball shots per person will be collected from 40 people. A line graph can be plotted to roughly see the relationship between the two variables. Then, using Pearson’s Correlation Coefficient formula, the magnitude of the correlation can be determined. Later, using the Chi2 value formula, it can be determined if the variables are independent of each other.

**Analysis:**

A group of people are taken with varying heights and their shooting ability. If standard deviation is high, the range of the data set is large. For Pearson’s correlation coefficient, if the value is 1 or close to 1, there is a strong positive correlation

**2.)Modeling the function and finding the surface area of a ceramic mug.**

**Mathematics:**

**Lagrange Interpolation Method and the FITPOLY function** from GeoGebra are used as two different methods to find the quadratic expressions to calculate the surface area of ceramic mugs.

**Procedure:**

Firstly, the mug is placed in GeoGebra where the coordinates of the mug can be found. Using these coordinates, two methods are performed to find the equations of the curves. First, the Lagrange Interpolation formula is used where the coordinates are just substituted into the formula. Since the calculations are tedious, a coding website can be used to find the coefficient values. The other method is the FITPOLY function where GeoGebra estimates a curve depending on the degree of the polynomial for the respective portion of the mug. Using the more accurate equations, the surface area of the mug is found using calculus.

**Analysis:**

The equation results from performing both methods is compared to see which one resembled a mug more. These sets of equations would be used in the further calculations to find the surface area of the ceramic mug

**3.) Is there a relationship between a person’s height and his shoe size.**

**Mathematics:**

This IA investigates the correlation between a person’s height and his shoe size using the **Pearson’s Correlation Coefficient and Chi-squared method**. The Pearson’s Correlation Coefficient is a method or a way to measure the relationship between two continuous or discrete variables. A Chi2 test involved making a contingency table where two variables are compared to see if they are related to each other.

**Procedure:**

The height and shoe size data will be collected from 40 people. A line graph can be plotted to roughly see the relationship between the two variables. Then, using Pearson’s Correlation Coefficient formula, the magnitude of the correlation can be determined. Later, using the Chi2 value formula, it can be determined if the variables are independent of each other.

**Analysis:**

If standard deviation is high, the range of the data set is large. For Pearson’s correlation coefficient, if the value is 1 or close to 1, there is a strong positive correlation. As for the Chi2 test, comparing the critical value against the Chi2 table will tell if the variable is in fact independent.

**4.) Analyzing the best mathematical way to estimate the number of candies in a jar.**

**Mathematics:**

Aim is to correctly guess the amount of candies inside a fully filled vase by using several methods. They are, GeoGebra equations (graphical software), square-root equations, and ellipse equations. It involves calculus, majorly, differentiation.

**Procedure:**

First, the volume of my hexagonal jar is calculated using measured dimensions. The volume of a single candy using GeoGebra software is found by rotating the function of the candy about the x axis (volume of revolution formula). Similarly functions are found in the other two methods as well and are rotated about the x axis using the same formula. After finding the individual volumes of the candy and the jar, the total amount of candies can be found by dividing them both.

**Analysis:**

to understand the reliability and the accuracy for each of these methods, the amount of candies in the jar can be counted and compared with the theoretical value. Whichever value is closest will be the most reliable method to estimate the number of candies in a jar.

**5.) Using Pringles to explore the formula of a hyperbolic paraboloid, determine the surface area and define the hyperbolic paraboloid parametrically.**

**Mathematics:**

Using mathematical concepts like differentiation and integration to calculate the surface area of a hyperbolic paraboloid such as a pringle.

**Procedure:**

Firstly, you would have to draw the pringles chip and then plot it on a graph. Then you must split it into different parts, and derive the equation. Calculate the surface area using integration.

**Analysis:**

This analysis is most important when it comes to the firm’s point of view. For instance, when manufacturing Pringles, one must optimize space and ingredients to ensure consumer satisfaction and reduce costs for the firm.

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