"The Hispaniola Water Shortage" Teacher SupportThe Hispaniola Water Shortage Archived PoW || Student Version The Hispaniola Water Shortage is no longer the current ESCOT Problem of the Week. The student version allows teachers to use the problem with their students without giving the students access to the archived answers. Teachers can use the link to the archived problem to get ideas about student thinking. The Hispaniola Water Shortage problem can be challenging as students attempt to find all the exact amounts of water they can measure using only two measuring containers. The goal is for students to investigate some properties of even and odd numbers, particularly what happens when you add them. Depending on the students' ability to understand the idea of pouring back and forth to measure, it may be helpful to start first with actual measuring cups, either as a single demonstration or as group work (see below). If you have something to share with us as you use any of the links or suggestions on this page (something you tried and changed or a new idea), we would love to hear from you. Please email us. Alignment to the NCTM Standards - Grades 6-8
- develop meaning for integers and represent and compare quantitites with them - understand the meaning and effects of arithmetic operations with fractions, decimals, and integers Algebra - understand patterns, relations, and functions - use mathematical models to represent and understand quantitative relationships Problem Solving - solve problems that arise in mathematics and in other contexts Communication - communicate mathematical thinking coherently and clearly to peers, teachers, and others - use the language of mathematics to express mathematical ideas precisely Connections - recognize and apply mathematics in contexts outside of mathematics
(Suggestion: Use two measuring cups, with tape marking the 6-oz. line on one cup and the 10-oz. line on the other.)
Remind students of the various problem solving techniques they can choose from, including:
Evaluate Information Find the Pattern Guess and Check Make a Table Plan and Reason Work Backward Write an Equation
Post-Activity [top] Related Lessons Online:
- Even Number Puzzle May 24, 1999 MidPoW (select Print this Problem to give to students) - Odd and Even - Curriculum Corporation Lessons for Students - Pouring Problem - Wilda's Swamp Water October 4, 1999 MidPoW (select Print this Problem to give to students) [top] Resources to use with students:
- Closure Property - Number Properties - Property of Closure - Ask Dr. Math FAQ - Glossary of Numbers - Ask Dr. Math FAQ - Six Quarts of Water, 2 Containers Vocabulary - closure - even number - odd number - parity [top] Other Resources
- Hispaniola.com - Britanica.com - Hispaniola - Britanica.com - Dominican BEATCALC - Beat the Calculator - Adding even numbers from two through a selected 2-digit even number - Adding a sequence of consecutive odd numbers |