Publisher

Highlights

Title

Changing Times

Author Name

Meg Thacher

Subject

ticking, Sumerians, food coloring, accuracy, vibrate, cycles, GPS, how to tell, frequency, tape, Egyptians, orbit, keeping track of, gears, pendulum clocks, oscillators, satellites, watches, oscillator, wiggle, counters, pendulums, Europe, history, atomic clocks, permanent marker, water, Global Positioning System, clocks, crafts, moon, contraptions, light, inventions, African American boy, bell towers, science, solar cycles, shadows, swinging, verge escapement, Bell Laboratories, Egypt, crops, networks, sun, Sumer, train conductors, Earth, timer, world, pocket watches, China, J.W. Horton, America, dark, Christiaan Huygens, quartz clocks, cell phones, approved for audio only, ticks, medieval times, cesium atoms, medieval, plastic cups, inaccuracy, water clocks, counter, marks, conductor, sundials, pushpins, clock towers, Mayans, calendars, DIY, Warren Marrison, timeline, time, prehistoric, frequencies, electrical currents, lunar cycles, railroads

Series Name

Series Level

Word Count

457

CEFR level

Language

English

ISBN number

9781644720264

Description

Learn how humans have figured out the time throughout our history, and then make your own water clock.

Word lists coverage

The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.

List	Total	Coverage
Eiken Grade 1	3,105	0.06%
Eiken Grade 2	866	0.69%
Eiken Grade 3	900	4.67%
Eiken Grade 4	600	9%
Eiken Grade 5	600	11%
Eiken Grade Pre1	2,868	0.1%
Eiken Grade Pre2	1,327	0.9%
Eiken Grade Pre2+	1,562	1.28%
NDL	875	13.26%
NGSL 1 to 1,000	1,000	11.3%
NGSL 1,001 to 2,000	1,000	2.6%
NGSL 2,001 to 3,000	801	1.5%
NGSL Supplemental	52	0%

Grammar lists coverage