TimeTest uses a random number generator to print arithmetic drills. You can choose from addition, subtraction, advanced subtraction (includes negative numbers), multiplication, or division. You can choose a maximum and a minimum range (from 0 to 999,999). TimeTest will print 50, 100, or 110 questions on a test. There is also an option to not allow duplicate problems. The test can be previewed and changed, if desired, before printing. An answer sheet can also be printed and will automatically adjust to any changes made to the test. The test can also be saved.

Ecology Worksheets - Table of Contents

1. Ecology:

community, habitat,ecosystem

an aquarium as a self-containded ecosystem

producers, consumer, decomposers

2. Cycles in an aquarium:

the "ecogame" story

instructions for producers, consumers, decomposers and abiotic factors

producers: energy, photosynthesis, respiration

consumers: feeding, respiration

decomposers: feeding & decomposition, respiration

draw the cycles in an aquarium

3. Food chains:

producers, primary-, secondary-, tertiary consumers

4. Food webs

5. Cycles in nature:

energy

oxygen- and carbon dioxide

water

6. Keywords: English-German

Birds Worksheets - Table of contents

1. Main characteristics

2. Adaption to flight:

a light, but strong skeleton

the plumage (flight-, downy- and body feathers)

lungs extend into air-filled sacs

3. Flight:

flapping, gliding and hoovering 4. Bird's breaks

5. Bird's feet

6. A bird's life cycle:

nests

eggs

a bird is born

nestling or chick

7. Keywords: English-German

Magnetism Worksheets - Table of contents

1. What is magnets:

testing magnets

what magnets are made of

magnetic materials

2. The magnetic force:

magnetic poles

magnetic fields

magnetic compass

3. Electromagnets:

build an electromagnet

why electromagnets are useful

4. Keywords: English-German

Sound Worksheets - Table of contents

1. What is sound:

different kinds of sound

create sound

sound waves

frequency

2. Sounds with different pitch:

range of frequencies

3. Sounds with different loudness

amplitude

measuring loudness

4. Sound we can hear

5. Sound we can't hear / ultrasound:

signal generator

ultrasound scans

6. Through which materials do sound waves pass?

solids, liquids, gases

7. Sound waves may be channeled:

reflection of sound

stethoscope

echo

8. The speed of sound

9. Sound all around us:

noise

music

10. Keywords: English-German