Students become readers and writers by ___________________ and ___________________.

Timed oral reading tests such as the DIBELS, which measure how many words a student can read in a minute, are blamed mainly for an overemphasis on speed of reading to the detriment of comprehension of the text.

A 3.00-m long gas column that is open at one end and closed at the other end has a fundamental resonant frequency 80.0 Hz. What is the speed of sound in this gas?

A 4.0-cm tall object is placed 68 cm away from a converging lens of focal length 34 cm. What are the nature and location of the image? The image is

A 4.0-cm tall object is placed 62 cm away from a converging lens of focal length 31 cm. What are the nature and location of the image? The image is

You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind and you perceive the frequency as 1390 Hz. You are relieved that he is in pursuit of a different speeder when he continues past you, but now you perceive the frequency as 1250 Hz. What is the frequency of the siren in the police car? The speed of sound in air is 343 m/s.

A 4.0-cm tall object is placed 70 cm away from a converging lens of focal length 35 cm. What are the nature and location of the image? The image is

A 2.10-m long gas column that is open at one end and closed at the other end has a fundamental resonant frequency 80.0 Hz. What is the speed of sound in this gas?

A 4.0-cm tall object is placed 52 cm away from a converging lens of focal length 26 cm. What are the nature and location of the image? The image is

A 2.90-m long gas column that is open at one end and closed at the other end has a fundamental resonant frequency 80.0 Hz. What is the speed of sound in this gas?