Helps students develop strong Critical Thinking skills [boy] kinda like exercising my brain . Yeah see this old question . It doesnt tell me whether you understand the math, because you can just guess and get it right. [boy] eenie meanie miny mo [woman] exactly. Now try this new kind of question. [boy] hm, 3 2 is the same as 3 one halves; thats here at one and one half [woman] right now i can see that you really understand fractions. And the number line. [boy] do i win anything . [woman. Laughs] ah haha tonight the deep south is reeling after tornadoes swept through over the weekend. At least 44 twisters were reported. 19 people were killed, more than were killed by tornadoes in the United States in all of last year. Mark strassmann is in southern georgia. Its terrible to look here. The outside is inside. Reporter more than Shirlene Davis heart raced when the twister hit sunday afternoon. She and her husband edgar kept moving room to room, away from their collapsing roof. What was it like to be on that floor as the roof is falling down . Well, i went into survivor mode. I cant explain. You just all your nerves and emotions just come to the surface. You just dont know whats going on. Uhhuh. And then when it was all o you know, we looked and came outside. Speechless. Reporter the tornado flattened neighborhoods from louisiana to central georgia. You want some help . Reporter overnight teams searched by flash light for victims and survivors. Seven people were found dead in this trailer park in adel, georgia, including amanda rowe. Debra tinsley powell is her sister. She had the best smile. She just loved my children so much. We need a lot of help here in doherty county. Briscoe, the county chairman, posted video on facebook of the Paradise VillageMobile Home Park. Four people were killed here. It literally looked like god threw half of the Mobile Home Park into the woods across the street. Reporter the davises are grateful to be alive, but their home of 35 years is gone in one violent minute. What are you going to do . Trust in the lord and move outside the davis battered house, but take a look. Many of their neighbors face the same hardship and heartache. Scott, thousands of people will be rebuilding for months. After a tornado strike one local official compared to a nuclear bomb. Remarkable pictures. Mark strassmann for us tonight. Mark, thank you. Tonight those same storms are headed up the northeast causing major delays at airports and flooding on the coast. Don dahler is on the jersey shore. Reporter the winds are howling at upwards of 60 miles an hour hear in seabright. It has the feeling of a cold hurricane, and with the fact that the evening high tide is in full effect, the surf is crashing up and over seawalls all up and down the east coast. Businesses, homes and streets are being flooded. The wind has brought down power lines and trees, tens of thousands of people are without power, a man in philadelphia was and the water, there are people who are still very grateful that the temperatures remain above freezing. One year ago today, this area rain today. It got nearly four inches yesterday, and that was a singleday record. Mireya villarreal is there. Reporter dramatic rescues played out all over california with days of relentless rain. Firefighters jumped in to save a family of four right before their truck was submerged by floodwaters. Along san diegos coast, two women were swept away by a strong current, one was rescued by a witness. I got her and i threw her over my shoulder. Reporter violent waves flooding beach towns. The storm also toppled trees and knocked out power. In the Sierra Nevada mountains, heavy storms trapped two cars. Have been supporting iraqi and kurdish troops in the siege, hoping of breaking the back of isis in iraq. Today our Charlie Dagata got a rare look inside the partially liberated city. It has taken three long and bloody months to get this far on an eerieve destruction became worse the closer we got to the university, a former isis weapons factory. Donald trump has vowed to eradicate isis militants, but its an enormous challenge. For these Iraqi Special forces, recapturing Mosul University was a symbolic victory. [gunfire] thousands of iraqi soldiers have thought to have lost their lives in mosul, some in the battle to reclaim this sprawling complex, including a wellstocked Chemistry Lab where militants invented new types of bombs. Aside from the obvious trail of destruction left behind, there are still signs of the isis occupation, including these two isis flags still playing the above the overpass. Fplaying the above the overpass. Isis still holds western parts of the city. We spoke with Lieutenant GeneralAbdulwahab Al saadi, who told us hes counting on more support what do you need most . We need air strikes, the general said. We need more equipment, including drones. That might be a tough sell with the new president , given that the United States has launched countless air strikes in the assault on mosul and spent millions retraining and arming iraqi forces. But the general told us the iraqi army still needs more help. For those in mosul exhausted by the fighting, thats the last answer they wanted to hear. In a sign of how difficult these battles are, scott, we werent allowed anywhere near the Chemistry Lab because we were told isis left a building booby trapped. Its a typical isis strategy that slows down iraqi forces while militants regroup elsewhere. Charlie dagata in mosul tonight. Charlie, thank you. Coming up next, more than a million protested the trump inauguration. So whats their next move . Smartphones to catch fire. 48 hours of protection. 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Reporter organizers of chicagos weekend protests expected 20,000 marchers to show up. Actually 250,000 did, so many that police had to cancel a planned march because the streets were too clogged. And yet in the cold gray light of this monday morning, one question lingers about what took place. So the demonstration is over. What now . Time to get active in your community on every level. Reporter liz radford, Jessica Scheller and Ann Scholhamer cochaired the chicago gathering that had been building since the election and is now a staple on social media. I think its unfortunate that things have to get really bad sometimes before it gets better, but sometimes when you push somebody to the edge, thats when they finally d even if we have to do this every year or every month to get people together, to reenergize them, then i guess im in. We will not go away. Reporter the 2018 midterm elections will be a primary focus, they say, safeguarding reproductive rights, preserving health care and protecting immigrants are just three motivating issues for something thats still too new to be called a movement. A lot of the issues that we are talking about right now are american issues. Reporter for now they intend to press congress on mr. Trumps cabinet and Supreme Court choices. Was this a protest against the president . I think for many people it was. I think in some measure it was a protest on a grander scale about the mindset that put the president into office. We want our presence known. We want him to understand that were a very powerful demographic voting bloc, and that we need to influence policy. A lot of work to do, scott, because as powerful as they hope to be, they are well aware that last fall they lacked the organization and the votes to defeat donald trump. Dean reynolds in chicago, thanks. Up next, smoldering smartphones. Samsung says mystery solved. I checked, everythings there. Wait a minute. Hey. Hold on, i can explain. You better have a good answer. Switch to geico and you could save a ton of money on your Car Insurance. Why didnt you say so in the first place . I thought yous was wearing a wire. Haha, what . Why would i wear a wire . Geico. Because saving fifteen percent or more on Car Insurance is always a great answer. The love story. The story of george and barbara bush. Apaysing love for each other. Both wound up in a houston hospital. He with pneumonia, she with bronchitis. Even when mrs. Bush was well enough to go home yesterday, she said no, shed stay one more day to be with her husband, the former president. They kind of get after each other. Somebody is being noncompliant patient, the other says no, no, you need to do that. Mrs. Bush went home today after doctors said mr. Bush was well enough to leave the icu. The bushes have been married longer than any first couple, 72 years this month. They truly are the most humble people. Today, when i told them that, you know, any words of advice, im going to go talk to the press. He said about what . I said about you. He said, people want to know about me . Mr. Bush wanted to go home today. Doctors told him that wouldnt samsung says its figured out what caused the batteries on some galaxy note 7 smartphones to catch fire. Heres kris van cleave. Reporter it was overheating incidents like these that prompted a worldwide recall and monthslong investigation by 700 samsung engineers. 200,000 plus devices and more than 30,000 lithiumion batteries were tested. Samsung found a design defect, incorrect battery placement in the upper right corner caused the first wave of problems. Then some replacement devices had a manufacturing error, an abnormal weld that led to internal short circuits. Dan ackerman from cnet. Two different defects from two different batteries from two different suppliers, and you end up with the same problem in both cases, which is what seemed so unbelievable about this case. Reporter in the u. S. , samsung received 13 reports of burns, 37 reports of property damage, and in all, 96 reports of overheating batteries. The vast majority of chargeable devices are powered by lithium ion batteries, known for their high output and low cost. Are these batteries safe . Or are we packing too much power into a small thing . They are safe conceptually, but were asking them to do more than ever in more tightly products. So theyre pushing the boundaries of what these batteries can physically do. Reporter there have been other products like ecigarettes overheating and catching fire and about a half million hoverboards were recalled last summer because faulty battery packs could overheat and in some cases catch fire. Airlines including alaska and Virgin America are now stocking burn bags like these that can contain a lithiumion fire. Samsung also announced a new eightpoint safety check of batteries that includes xraying for abnormalities. Scott, of the 3 million note 7s sold, 96 have been returned. That leaves about 120,000 unaccounted for worldwide. Kris van cleave with the followup for us tonight. Kris, thank you. Thats the overnight news for this tuesday. For some of you the news continues. For others, check back with us for the morning news and be sure not to miss cbs this morning. From the Broadcast Center in new york city, im scott pelley. This is the cbs overnight news. Welcome to the overnight news. Im jericka duncan. Week one of the Trump Administration got off to a busy start. The president met with Union Leaders and ordered a freeze on hiring some federal workers. Mr. Trump took the first step to pull out of the Transpacific Partnership trade agreement, and dismissed the latest lawsuit against him. Margaret brennan begins our coverage. All right. Were going to sign three memorandums right now. Reporter with the stroke of his pen, donald trump took three executive actions. Reinstating a reagan era ban on extending foreign aid to any oversees group that supports abortion rights. Ordering a federal hiring freeze, except within the free trade deal with 11 asia pacific countries. Great thing for the American Worker. Reporter mr. Trump said hed instead negotiate with countries one on one and told a gathering of ceos that hed reduce regulations and cut taxes, but punish them for shipping jobs overseas. If that happens, we are going to be imposing a very major border tax on the product when it comes in, which i think is fair. I believe that we have to be honest with the American People. Reporter White House PressSecretary Sean Spicer tried to reset relations with the peace corps after calling the media dishonest on saturday. This was the largest audience to ever witness an inauguration period, both in person and around the globe. Reporter spicer claimed photos of trumps swearing in were intentionally framed to minimize the crowd. Today he explained he was actually referring to total viewership online, on tv and in person. He also admitted the data on attendees was incomplete. I think sometimes we can disagree with the facts. There are certain things that we may not fully understand when we come out, but our intention is never to lie to you. Reporter but the Trump White House continues to insist the president is treated unfairly by the press, particularly regarding his relationship with the cia, which he visited on saturday. I love you. I respect you. Theres nobody i respect more. Youre going to do a fantastic job. Reporter before assuming office, mr. Trump brushed off the intelligence communitys conclusion of Russian Election meddling by saying these are the same people that said Saddam Hussein had weapons of mass destruction, and he accused intelligence officials of leaking an unsubstantiated dossier about his ties to russia. Thats something that nazi germany would have done and did do. I think its a disgrace. That information that was false and fake and never happened got released to the public. Reporter scott, today the Trump Organization released a letter showing that the day before inauguration President Trump resigned from the company that bears his name along with more than 400 entities. Trumps National Security adviser Michael Flynn is coming under fire for his contacts with kremlin leaders before mr. Trump took office. Jeff pegues has that. Reporter when President Trump left cia headquarters saturday, a couple of steps behind him was his National Security adviser, retired general Michael Flynn. Cbs news has learned that u. S. Investigators have been looking into at least one phone call in late december between flynn and russias ambassador to the United States, serge kislyak. The call came just as the Obama Administration expelled dozens of Russian Diplomats. On dem suggested on Russian Television that the kremlin would retaliate by expelling american diplomats, but shortly thereafter, president Vladimir Putin sent out a note saying that he would not kick u. S. Diplomats out of the country and instead talked about restoring russianu. S. Relations based on the policies of the Trump Administration. President elect trump then responded in a tweet, great move on delay by v. Putin. I always knew he was very smart. Investigators are trying to determine whether the trump team was coordinating with the russians leading up to and after the election. So far sources say they have found no evidence of wrongdoing. Today White House PressSecretary Sean Spicer sai