Read the passage titled “The Mystery of the Missing Poster”:

“Someone took it,” Taylor said, staring at the blank wall. The hallway bulletin board still had thumbtacks, but the poster was gone.

Alex frowned. “It was here this morning. The art show starts tomorrow.”

Taylor crouched and picked up a torn corner of paper. “Look,” Taylor said. “It ripped. Whoever did it was in a hurry.”

A group of students passed by, laughing. One of them carried a roll of tape and a paint-stained apron.

Alex watched them go. “Why would anyone steal a poster?” Alex asked.

Taylor pointed toward the gym doors. “Because it wasn’t just a poster,” Taylor said. “It had the list of judges.”

Alex’s eyes widened. “So someone wanted to change the results?”

Taylor shrugged. “Or someone wanted us to think that.” Taylor tapped the torn corner. “This paper is thick, like the kind from the office.”

Alex lowered their voice. “You think it was reprinted?”

Taylor nodded. “Let’s check the printer log,” Taylor said. “If we’re right, we’ll have a name.”

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Read the passage titled “The Great Mail Run of 1910”:

In 1910, many rural families received mail only once or twice a week. Dirt roads and long distances made delivery difficult. To solve this, the postal service expanded Rural Free Delivery routes.

Records from April 1910 show that new routes were added in several counties. Carriers used horses, bicycles, and early motor vehicles. Each method had advantages and problems.

A report from the Post Office Department noted that reliable mail improved local business. Farmers could order supplies more easily. Stores could advertise sales to a wider area.

Community leaders also valued faster communication. Letters brought news from relatives in other states. Schools received updated materials, including maps and books.

The change was not instant. Some routes were delayed by floods and snow. Carriers sometimes repaired bridges or cleared fallen branches themselves.

By 1915, Rural Free Delivery reached millions of Americans. Historians describe it as an important step in connecting the nation. It helped rural communities feel less isolated.

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Read the passage titled “Building the First City Park”:

In 1871, the growing city of Riverton faced a problem. Factories and new housing filled most open land. Families had few safe places to play outdoors.

That year, Mayor Elena Brooks proposed creating a public park. City records show that the council argued about the cost. Some members preferred to sell the land to developers.

On March 3, 1872, the council approved the plan by a narrow vote. The city purchased 40 acres near the river. Workers planted shade trees and built walking paths.

Newspaper advertisements invited residents to the park’s opening on June 15, 1873. A brass band performed, and local students recited poems. Speakers described the park as “a green room for all citizens.”

The park changed daily life in Riverton. Families began visiting on weekends. Community groups held picnics and games. Over time, the park also improved the city’s reputation.

By 1890, other cities in the region copied the idea. Historians note that Riverton’s park was part of a larger movement. Leaders believed green spaces supported health and civic pride.

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Read the passage titled “Why Some Metals Rust”:

Rust is a common example of oxidation. Oxidation is a chemical reaction in which a substance loses electrons. Iron rusts when it reacts with oxygen and water.

In this process, iron atoms combine with oxygen atoms to form iron oxide. The reddish-brown coating is brittle and flaky. Over time, it can weaken tools, bridges, and pipes.

Water plays an important role. It helps move ions, which are charged particles, across the metal surface. Salt can speed up rusting because it increases conductivity.

Scientists reduce rust in several ways. One method is painting, which blocks oxygen and water. Another method is galvanizing, which coats iron with zinc. Zinc oxidizes more easily than iron, so it protects the iron underneath.

Stainless steel resists rust because it contains chromium. Chromium forms a thin, protective layer that prevents further oxidation. This layer is hard to see, but it is effective.

Understanding oxidation helps people choose materials for buildings and machines. It also explains why some objects last longer outdoors. Careful design can slow chemical damage.

Based on the passage, what type of publication is this likely from?

Read the passage titled “Keep Recess, Don’t Cut It”:

Some schools are considering shorter recess to add more class time. The idea sounds reasonable at first. However, cutting recess can harm learning instead of helping it.

Students need movement to stay focused. After sitting for long periods, many children struggle to pay attention. A short break outdoors can reset the brain.

Recess also builds social skills. On the playground, students practice sharing rules and solving conflicts. Those skills matter in group projects and classroom discussions.

Supporters of shorter recess say test scores should come first. Yet strong learning is not only about minutes at a desk. It is also about motivation and energy.

Schools can improve academics without removing recess. Teachers can use clearer routines and better feedback. Students can get extra help in small groups.

Recess is not wasted time. It supports healthy bodies and stronger minds. Schools should protect it, not shrink it.

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Read the passage titled “A Better Way to Handle Homework”:

Homework can help students practice skills, but it often becomes stressful. Many students juggle sports, music, and family responsibilities. Schools should adjust homework policies to match real schedules.

First, teachers should coordinate major assignments. When three large projects are due on the same day, students rush. Rushing leads to shallow learning and careless mistakes.

Second, homework should have a clear purpose. Busywork wastes time and lowers motivation. Short, focused practice is usually more effective.

Third, schools should offer a homework help period. Students could ask questions before going home. This would reduce frustration and improve understanding.

Some people argue that more homework builds discipline. Discipline matters, but so does sleep. Students who are exhausted cannot learn well the next day.

A balanced policy would support both learning and health. Schools should update homework expectations. Students will benefit, and teachers will too.

Based on the passage, what type of publication is this likely from?

Read the passage titled “Earth’s Moving Plates”:

Earth’s outer layer is not one solid shell. It is divided into large pieces called tectonic plates. These plates float on a softer layer of rock beneath them.

Plate motion is slow but constant. Most plates move a few centimeters each year. Over millions of years, that movement can reshape continents and oceans.

There are three main types of plate boundaries. At divergent boundaries, plates move apart, and magma rises to form new crust. At convergent boundaries, plates collide, and one plate may sink below another. At transform boundaries, plates slide past each other.

Many earthquakes occur near plate boundaries. When plates stick and then suddenly slip, energy is released as seismic waves. Volcanoes also form near some boundaries, especially where one plate sinks into the mantle.

Scientists measure plate motion using GPS stations. They also study patterns of rocks and fossils. These clues show that continents have moved over time.

Plate tectonics helps explain mountain building, ocean trenches, and island chains. It is a key idea in modern Earth science.

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Read the passage titled “The First School Lunch Program”:

In 1946, the United States passed the National School Lunch Act. The law aimed to improve student nutrition and support farmers. It created a permanent program for providing meals in schools.

Before the law, some cities ran local lunch programs. These programs depended on donations and volunteer work. As a result, many rural schools had no lunch service at all.

After 1946, the federal government helped pay for meals. Schools received funding and food supplies. In return, they had to meet certain nutrition guidelines.

Reports from the late 1940s describe how schools adjusted. Cafeterias were built or expanded. Staff members were trained to prepare meals safely. Students often noticed the change immediately.

Historians note that the program grew over time. New rules were added, and more schools joined. The lunch program became part of daily school life for millions of students.

This event is often discussed in social history units. It shows how laws can shape everyday routines. It also reflects changing ideas about public health.

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Read the passage titled “The Day the River Froze, 1842”:

In January 1842, a long cold spell struck the upper Midwest. Temperatures remained below freezing for nearly three weeks. As a result, sections of the Mississippi River formed thick ice.

Newspaper reports from the time describe an unusual sight. People walked across the frozen surface near river towns. Farmers guided wagons over the ice to reach markets faster. Local leaders warned citizens to avoid thin areas.

On January 19, 1842, a mail carrier in Illinois recorded the conditions in his log. He noted that the ice “rang like metal” under horses’ hooves. He also wrote that the wind made travel difficult.

Historians explain that this event affected trade and communication. Steamboats could not operate in many places. Deliveries were delayed, and some river businesses closed temporarily. At the same time, the ice created new shortcuts for travelers.

By early February, warmer air moved in from the south. The ice began to crack and drift downstream. Town officials again warned residents to stay off the river. Several bridges were damaged when large ice sheets struck their supports.

Today, this freeze is often mentioned in regional histories. It shows how weather shaped daily life before modern transportation. It also reminds readers that rivers can change quickly.

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Read the passage titled “How Clouds Form”:

Clouds form when water vapor in the air cools and condenses. Condensation happens when a gas changes into a liquid. In the atmosphere, water vapor turns into tiny droplets or ice crystals.

Cooling often occurs when air rises. Higher altitudes have lower pressure, so rising air expands and cools. If the air cools to its dew point, condensation begins.

Cloud droplets need surfaces to form on. These surfaces are called condensation nuclei. Dust, sea salt, and smoke particles can act as nuclei.

Different clouds form under different conditions. Cumulus clouds are puffy and often appear on fair-weather days. Stratus clouds spread in layers and can bring drizzle. Cirrus clouds are thin and high, and they are made of ice crystals.

Meteorologists study clouds to predict weather. Satellite images show cloud patterns over large areas. Ground observations provide details about height and thickness.

Cloud science helps explain storms, rainfall, and climate patterns. It also connects to everyday observations in the sky.

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