For many students, algebraic formulas are "abracadabra": they lack symbol sense. Symbol sense includes identifying the structure of algebraic formulas, giving meaning to them, and reasoning with and about formulas. Besides ...
Education
Oct 26, 2020
0
5
In mobile underwater acoustic communications (UAC), the relative movement between the transceivers will cause Doppler spread in the received signal, which will bring inter-carrier interference to the orthogonal frequency-division ...
General Physics
Oct 22, 2020
0
8
Activists nationwide have resumed demanding the removal of statues and symbols that are considered racially offensive—such as of slave owners, Confederate leaders and the Confederate flag.
Political science
Aug 17, 2020
49
546
The number of South African rhinos killed by poachers fell by half in the first six months of the year, but 166 were slaughtered nonetheless, the environment minister said Friday.
Ecology
Jul 31, 2020
0
826
A group of poachers have attacked two vessels carrying marine conservationists in protected waters in Mexico's Gulf of California, the Sea Shepherd conservation group said on Wednesday.
Ecology
Mar 5, 2020
0
17
Most children learn that written numbers represent quantities in pre-school or junior primary school.
Plants & Animals
Jun 5, 2019
0
11
For the first time, scientists from the Friedrich Schiller University in Jena and the Senckenberg Research Station for Quaternary Palaeontology Weimar conducted a detailed comparison of the mechanical properties of mammoth ...
Archaeology
Feb 28, 2019
0
3
Consumers appear to embrace sustainable innovations, such as electric vehicles and smart energy systems, because it means something positive for their status and identity. Raising people's awareness of this symbolic significance ...
Environment
Nov 14, 2018
0
12
Researchers at the Max Planck Institute for the Science of Human History in Jena, Germany have just launched the Color Game, an app designed to provide a new way to study language evolution. The game asks players to communicate ...
Social Sciences
May 14, 2018
1
338
A small dot on an old piece of birch bark marks one of the biggest events in the history of mathematics. The bark is actually part of an ancient Indian mathematical document known as the Bakhshali manuscript. And the dot ...
Mathematics
Sep 21, 2017
1
29
