Sites
ABE Volume Calculator
http://grapevine.abe.msstate.edu/~fto/tools/vol/index.html
Enter the dimensions of a shape and this site will find the volume for you.

Cubes
http://illuminations.nctm.org/tools/tool_detail.aspx?id=6
Add cubes, rows or layers to the inside of the box by clicking on the button with 
the picture of the appropriate shape.
Lessons
Sugar Cubes
http://www.iit.edu/~smile/ma9508.html
Students construct shapes using sugar cubes. 
K-2
Lessons
Drop by Drop
http://illuminations.nctm.org/index_d.aspx?id=127
In this lesson, students recognize and use the attributes of volume. 
They engage in activities that promote understanding of how to measure 
volume using standard units.

A Perfect Building
http://www.creativille.org/groundfloor/geometry/perfectbuilding/
primstudent.htm
Cooperative groups complete a formal proposal for a single-story building.

Making Estimations in Measurement
http://www.eduref.org/
This particular activity was designed to provide students with an opportunity to 
utilize their knowledge of measurement in making accurate measurements and 
estimations. 

How Many Coins in the Jar?
http://www.eduref.org/
Students will predict and measure how many of certain items it takes to fill a jar.
Year 3-4
Sites
Recipe For Weather
http://www.ucar.edu/educ_outreach/webweather/basic.html
Find out how combinations of temperature, pressure, volume and density make 
the weather.
Lessons
Area and Volume
http://mathforum.org/paths/measurement/av.html
Students will be able to describe the difference between area and volume and 
also be able to understand how various units of measure relate to one another.

Collecting The Rays
http://illuminations.nctm.org/index_d.aspx?id=240
In this lesson, students explore how variations in solar collectors affect the 
energy absorbed. 
Students investigate relationships among the linear dimensions, the area, and the 
volume of rectangular prisms.

Cylinders and Scale
http://www.sciencenetlinks.com/lessons.cfm?DocID=250
To teach students that most things have built-in limits in scale, 
but that knowing something’s extreme limits of scale can be revealing.

Water, Water
http://illuminations.nctm.org/index_d.aspx?id=289
In this lesson students compare the amount of water they use in daily life 
with the amount allotted for each person each day on a Space Shuttle.

How Many Pearls?
http://www.pbs.org/wgbh/nova/pearl/uncountable.html
Students estimate the number of pearls in a treasure chest. 

Popcorn Challenge
http://www.figurethis.org/challenges/c03/challenge.htm
Students learn to test their visual estimates of capacity of different shaped 
containers.

Building A Box
http://illuminations.nctm.org/index_d.aspx?id=570
This lesson uses a real-world situation to help develop students\' spatial 
visualization skills and geometric understanding. 

Whale Measurements 
http://www.eduref.org/
Students will use problem solving skills to understand how their size relates to 
actual whale sizes through a measurement activity, followed by a graphing exercise.

Introduction To Volume
http://www.iit.edu/~smile/ma9517.html
Students discover volume of different containers and make a cost analysis of 
different brands of popping corn.

Hands On Area and Volume
http://ofcn.org/cyber.serv/academy/ace/math/cecmath/cecmath030.html
Students will be able to describe the difference between area and volume and 
also be able to understand how various units of measure relate to one another.

Cubed Containers
http://www.beaconlearningcenter.com/Lessons/271.htm
This lesson allows for cooperative groups to explore volume in relation to 
centimetre cubes and other non-standard units of measurement using small 
containers.

Introduction to Estimation and Measurements
http://www.iit.edu/~smile/ma9503.html
Students discover and apply rules for estimating and measuring liquids.
Year 5-6
Sites
Volume and Shape Interactive 
http://nlvm.usu.edu/en/nav/frames_asid_275_g_3_t_3.html
Try your hand at the classic Piagetian conservation of volume test.
Lessons
Surface Area and Volume
http://www.shodor.org/interactivate/lessons/sa_vol.html
This lesson is designed to introduce students to surface area and volume.

Block and Crushed Ice Challenge
http://www.figurethis.org/challenges/c62/challenge.htm
Students estimate which melts faster, crushed or block ice and learn about 
surface area at the same time.

Building A Box
http://illuminations.nctm.org/index_d.aspx?id=570
This lesson uses a real-world situation to help develop students\' 
spatial visualization skills and geometric understanding.

Determining Volumes of Similar Solids
http://regentsprep.org/Regents/math/volumes/TsimVol.htm
Students determine which solids have similar capacity.

Measurement of Volume
http://www.iit.edu/~smile/ma9512.html
Students will estimate and measure the volume of a container using proportions.

Liquid Volume
http://www.iit.edu/~smile/phma0300.htm
Students will learn and use formulas for the volume of a rectangular prism 
and volume of a cylinder.

Gases, Pressure, and Volume
http://www.iit.edu/~smile/ch9512.html
Students learn about the relationship between the pressure of a fixed
quantity of gas and its volume.

Vessel Volumes
http://www.artic.edu/cleo/Teachfolder/Amphtml/FINAL/Amphora.Math.1.html
Students determine relative volume equivalents among various ancient 
Greek vessels.

Cube Models
http://www.uen.org/Lessonplan/preview.cgi?LPid=6399
Students create shapes representing different units of measurement.

Density: A Unique Physical Property
http://www.iit.edu/~smile/ch9106.html
Students discover that density is a unique physical property of a substance 
which can be used to identify it. 

Density
http://www.iit.edu/~smile/ph9613.html
Students discover what properties determine the phenomenon of 
objects able to float and objects able to sink.

Catch Your Breath
http://www.smm.org/heart/lessons/lesson9.htm
Students will measure lung capacity and explore factors that affect the 
amount of air the lungs can hold.