University of Illinois
University of Illinois Extension: Plan Your Spending
This site presents the budgeting process through a series of steps. This first page describes the first step, creating a spending plan of estimated expenses. This page also has a link to a downloadable spending plan that requires Acrobat...
University of Cambridge
University of Cambridge: Nrich: Angle A
Sharpen your logic and angle recognition skills by working on this interactive challenge. Solution available.
PBS
Pbs Teachers: Something Fishy [Pdf]
Estimate the size of a large population (fish in a bay) by applying the concepts of ratio and proportion through the capture-recapture statistical procedure.
PBS
Pbs Kids: Peg + Cat: Games: Bubble Bath
Help Pet and Cat fill the bathtub with water by picking a container and pouring water into the tub. You will have to estimate how many containers it will take to fill the tub with water and then see if you are correct.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Lesson: An Introduction to Estimation and Measurements
Pancakes anyone? Students explore estimation and measurement by learning how to make pancakes. A hands-on lesson designed for students in grades 3-5 where students are engage in hand-on experiences involving measuring volume, converting...
ABCya
Ab Cya: How Many Marbles?
How Many Marbles is a fun 3D activity for children to practice estimating. Rotate the jar to see the number of marbles from different sides. Estimate the number of marbles by using the arrow keys to answer. How close can you get? This...