Get estimating with this spooky activity that asks your young mathematician to rely on their problem-solving skills to figure out how many items they believe are in spooky Halloween jars!

This hands-on activity gives your child an opportunity to apply various strategies to solve a problem and to check if his answer makes sense.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Explore properties of liquids and how temperature and salinity effect surface tension of liquids in this fun- filled science fair project idea.

Evaluate whether people can raise the temperature of their finger using the power of their thoughts.

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

Check out this fun science project to explore the relationship between solubility, drug absorption, and time required for a drug effect to become apparent.

Science fair project that measure winds speed, temperature, and time of day in order to determine the origins of the wind.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Forget the measuring stick! This fun math activity uses a body part, your child's hand, as a ruler.

The thermometer outside is dip, dip, dipping! What kind of clothes will keep you warmest this winter? This project determines which materials insulate best.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

This science fair project idea determines effective strategies to help students stay awake and attentive.

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

This first grade science activity is great for winter! Your child will grow and observe her own amaryllis bulb, keeping a journal of her scientific findings.

Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

This experiment investigates if stress alters body temperature.

Can cells be frozen? This science fair project provides information to answer this question.

Practice measurement using centimeters in this fun math race designed for your second grade student!