Home | Number Concept | Ratio | Recommended Investigations

 Recommended Investigations Geometric Sequences and Series: Explore the properties of geometric sequences and series. End Behaviors with Constant Ratio: Find two functions that produce a constant ratio for large x. Boys and Girls in the Class: Explore the properties of ratio of boys-to-girls in several classrooms. The Slope of a Parabola: Explore the properties of the slope between two points on a parabola. Let's Play Ball!: Determine the number of plate appearances of a baseball player. Adding Ratios: What happens when you add ratios. Similar Triangles: Determine proportions comparing the side lengths of similar triangles. Angle Bisector: Given a triangle and an angle bisector, determine proportions comparing the lengths of the line segments on the sides of the triangle. Math in Motion: Explore the relationship of graphs and motion. Choosing a Loan: Determine which car loan would you pick. The Tortoise and the Hare: How long was the hare asleep if the tortoise wins the race? Predicting the Value of a House: How much will the Miller's house be worth thirty years? Buying Ping Pong Balls: How many balls did Alice buy? It's On Lacey: How much lunch can Lacey afford? Bouncing Ball: Determine how high a ball rebounds with each bounce. Increasing Area: If the area of a rectangle increases how much does its length and width increase? Discounting Cars: Help a car dealer decide how much to mark down her old inventory. Red and Green Marbles: What would you have to add to a package of marbles so that the ratio of red marbles to green marbles becomes 5 to 8? Raising Salaries: How much was Sally earning 8 years ago? Submit your idea for an investigation to InterMath.